PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES Fourth Series Vol- XI, No. 3. pp. 39-47 July 8, 1921 III LIST OF THE AMPHIBIANS AND REPTILES OF IDAHO, WITH NOTES ON THE SPECIES IN THE COLLECTION OF THE ACADEMY BY JOHN VAN DENBURGH Curator of the Department of Herpetology AND JOSEPH R. SLEVIN Assistant Curator of the Department of Herpetology We do not know of any published list of the amphibians and reptiles of Idaho. The little that is known regarding the occur- rence and distribution of various species of these classes within this state is scattered rather widely through a number of pub- lications and is not readily available to the student. In record- ing the Idaho material which is now in the museum of the Cali- fornia Academy of Sciences, we, therefore, present also a list similar to those already published for the states of Arizona, Utah and Nevada. This list is thought to include all species now definitely known to live in Idaho. Those which are not yet represented in the Academy's collections by specimens col- lected in Idaho are indicated by a star preceding the number in the list. Following this list are given notes on the species in the Academy's collections. Most of our Idaho specimens were secured by Mr. Richard P. Erwin and Mr. Joseph R. Slevin. July 8, 1921 40 CALIFORNIA ACADEMY OF SCIENCES rP»oc. 4th Se». 1. Ambystoma macrodactylum 2. Ambystoma tigrinum 3. Scaphiopus hammondii 4. Bufo boreas boreas *5. Pseudacris triseriata. 6. Hyla regilla 7. Rana catesbeiana 8. Rana pipiens 9. Rana pretiosa *10. Crotaphytus collaris bailey i 11. Crotaphytus wislizenii *12. Uta stansburiana stansburlana 13. Sceloporus graciosus graciosus 14. Sceloporus occidentalis biseriatus 15. Phrynosoma douglassii 16. Phrynosoma platyrhinos 17. Cnemidophorus tessellatus tessellatus 18. Plestiodon skiltonianus *19. Charina bottae utahensis 20. Coluber constrictor mormon 21. Coluber taeniatus taeniatus 22. Pituophis catenifer stejnegeri ? *23. Rhinocheilus lecontei *24. Thamnophis sirtalis parietalis 25. Thamnophis sirtalis concinnus 26. Thamnophis ordinoides vagrans *27. Crotalus confluentus *28. Crotalus oreganus 1. Ambystoma macrodactylum Baird Cope's A. epixanthum was described from specimens col- lected near the head of South Boise River, on the south side of the Sawtooth Mountain range, Idaho. Sixty-four salamanders from Boise County seem to us to be indistinguishable from numerous specimens of A. macrodactylum collected in Wash- ington, Oregon and California. Cope, himself, recorded sal- amanders from Montana under the latter name. Of our speci- mens, twenty-one were secured at Payette Lake, Boise County. *Species which the Academy has not yet received from Idaho. Vol. XI] VAN DENBURGHSLEVIN— AMPHIBIANS AND REPTILES 41 (Nos. 41580 and 41581) on September 5, 1916, and (Nos. 43539 to 43557) between August 11 and 21, 1917. Forty- three (Nos. 45821-45863) were found at McCall, Boise County, August 6 to 14, 1918. 2. Ambystoma tigrinum (Green) Cope (Bull. U. S. Nat. Mus., No. 34, 1889, p. 83) has recorded this salamander from Market Lake, Jefferson County. The species is represented in our collections by six larvae col- lected by Mr. Brighton C. Cain in Bear Lake County. No. 47745 is from Bear Lake. The other five (Nos. 47746-47750) were caught in Deep Lakes, Bloomington Canyon. 3. Scaphiopus hammondii Baird Fourteen specimens from Boise, Ada County, are at hand. Of these, six (Nos. 43533-43538) were collected July 9, 1917, one (No. 45739) May 6, 1918, and seven (Nos. 45740-45746) July 19, 1917. 4. Bufo boreas boreas (Baird & Girard) Thirty-two toads from Idaho are in our collections. Fifteen of these (Nos. 41521-41 535, and 45747-45756) are from Boise, Ada County. Five (Nos. 41571-41575) were collected at Pay- ette Lake, Boise County, September 3-11, 1916, and one (No. 45820) at McCall, Boise County, August 8, 1918. One (No. 47744) was caught at Deep Lakes, Bloomington Canyon, Bear Lake County, July 29, 1920. 6. Hyla regilla Baird & Girard Two tree-toads (Nos. 41540-41541) were taken at Payette Lake, Boise County, Sept. 2-4, 1916. Two hundred and sev- enteen (Nos. 41536-41539, 43532, 45527-45738) were col- lected at Boise, Ada County, in August, 1916, July 9, 1917, and May 6 to August 26, 1918. 7. Rana catesbeiana Shaw Mr. Slevin was told that this frog had been introduced into Idaho some years before his visit and was spreading rapidly. 42 CALIFORNIA ACADEMY OF SCIENCES f Proc. 4th Ser. Eighty-three specimens were collected near Boise, Ada County, (Nos. 41453-41510) on August 23 and 24, 1916, and (Nos. 45451 to 45475) between May 23 and September 2, 1918. 8. Rana pipiens Schreber One hundred and seventy-four specimens of this frog are included in our Idaho collections. Forty-six of these (Nos. 41307-41352) were taken at Fort Hall, Bingham County, Au- gust 12 to 16, 1916. One (No. 47742) was caught by Mr. Brighton C. Cain at Bear Lake, Bear Lake County, July 22, 1920, and another (No. 47743) at Deep Lakes, Bloomington Canyon, Bear Lake County, July 29, 1920. All the other spec- imens were collected near Boise, Ada County, (Nos. 41388- 41452 and 41511-41520) in August and September, 1916, and (Nos. 45476-45526) from July 18 to September 2, 1918. 9. Rana pretiosa Baird & Girard One hundred and twenty-five frogs of this species were secured in Idaho, as follows : Twenty-eight (Nos. 41542-41570) at Payette Lake, Boise County, September 5 to 9, 1916. Fifty-six (Nos. 41584-41639) at Guyer Hot Springs, Blaine County, September 18 and 19, 1916. Forty-one (Nos. 45779-45819) at McCall, Boise County, August 6 to 11, 1918. 11. Crotaphytus wislizenii Baird & Girard Two (Nos. 41275-41276) were taken at Fort Hall, Bingham County, August 11, 1916. Seventeen were collected near Boise, Ada County, as follows: three (Nos. 45421-45423) from May 22 to August 16, 1914; six (Nos. 41366-41371) from August 25 to 29, 1916; three (Nos. 45418-45420) Au- gust 21 to 26, 1916; four (Nos. 45424-45427) June 24, 1917; and one (No. 45417) July 15, 1918. The femoral pores in nineteen specimens vary from sixteen to twenty; being 16 once, 17 six times, 18 eleven times, 19 thirteen times, and 20 seven times. The average of the thirty- eight thighs is 18.5. Vol. XI] VAN DENBURGH-SLEVLN— AMPHIBIANS AND REPTILES 43 13. Sceloporus graciosus graciosus (Baird & Girard) The collections contain fifty-four specimens from Idaho. Of these, two (Nos. 20947, 20948) were collected at Pocatello, Bannock County; one (No. 20949) is from Idaho Falls, Bonne- ville County; thirty-eight (Nos. 41110-41119 and 41277- 41304) were secured at Fort Hall, Bingham County, August 11-16, 1916; and thirteen (Nos. 41385, 45435-45446) were found at Boise, Ada County, in August and September. The femoral pores in fifty-four specimens vary from eleven to seventeen; being 11 twice, 12 nine times, 13 twenty-five times, 14 thirty-two times, 15 twenty-two times, 16 sixteen times, and 17 twice. The average of the one hundred and eight thighs is 14.1. 14. Sceloporus occidentals biseriatus (Hallowell) All our Idaho specimens were secured near Boise, Ada County. Here two (Nos. 45449, 45450) were taken September 9, 1914, thirteen (Nos. 41372-41384) August 25-28, 1916, and two (Nos. 45447, 45448) August 16, 1918. The femoral pores in seventeen specimens vary from thirteen to seventeen ; being 13 six times, 14 six times, 15 fourteen times, 16 four times, and 17 four times. The average of the thirty- four thighs is 14.8. 15. Phrynosoma douglassii (Bell) Our three Idaho specimens of this horned-toad were taken one (No. 41305) at Fort Hall, Bingham County. August 11, 1916, and two (Nos. 45433, 45434) at Boise. Ada County, in July and August, 1916. 16. Phrynosoma platyrhinos Girard One specimen (No. 20932) from Bliss, Gooding County, is in the collection. Its femoral pores are 11-11. 17. Cnemidophorus tessellatus tessellatus (Say) Only six Idaho specimens are at hand. These are one (No. 20944) from Upper Salmon Falls, Twin Falls County, and five from Boise, Ada County, where they were taken (No. 44 CALIFORNIA ACADEMY OF SCIENCES FP*oc. 4th Se«. 41386) on August 26, 1916, and (Nos. 45429-45432) between May 30 and September 30, 1918. The femoral pores in six specimens vary from eighteen to twenty-two; being 18 four times, 19 three times, 20 twice, 21 once, and 22 twice. The average of the twelve thighs is 19.5. 18. Plestiodon skiltonianus Baird & Girard The two specimens of this skink probably furnish the first record of this species in Idaho. They were taken (No. 41306) at Fort Hall, Bingham County, August 12, 1916, and (No. 41387) at Boise, Ada County, August 29, 1916. 19. Charina bottae utahensis Van Denburgh Two specimens from Blue Lake and Hood's Valley, Kootenai County, in the collection of Stanford University have been recorded in these Proceedings (Series 4, Vol. X, No. 3, 1920, p. 32). 20. Coluber constrictor mormon (Baird & Girard) The collections include nineteen of these racers from Boise, Ada County. Nine specimens (Nos. 41353-41361) were col- lected August 26 and 27, 1916; one (No. 45410) May 30, and one (No. 43530) June 21, 1917. Eight specimens (Nos. 45402-45409) were taken June 3 to Sept 2, 1918. Vol. XI] VAN DENBURGH-SLEVIN— AMPHIBIANS AND REPTILES 45 21. Coluber taeniatus taeniatus (Hallowell) Two specimens from Boise, Ada County, August 29. 1916, have scale counts as follows : 22. Pituophis catenifer stejnegeri Van Denburgh? Two gopher-snakes (Nos. 45129, 45130) taken at Boise, Ada County, June 25 and 29, 1918, have already been recorded. (Proc. Cal. Acad. Sci., Ser. 4, Vol. X, 1920, p. 23). 23. Rhinocheilus lecontei Baird & Girard So far as we know this snake has never been recorded as occurring in Idaho. We have secured no specimens there. The species is added to the list because of a specimen in the Julius Hurter collection, now in the National Museum. This specimen was sent to us, for examination, by Mr. Hurter, who stated that it had been caught in Elmore County, Idaho, Octo- ber 15, 1910. It is a female with scales in 25 rows; gastro- steges 201 ; urosteges 43, the second to the twenty-fourth not divided; anal single; supralabials 8-8, the seventh largest, the fourth and fifth reaching eye ; infralabials 8-8, the fifth largest ; preoculars 1-1 ; postoculars 2-2; loreal 1-1 ; temporals 1+3+4- 2+3+4; anterior and posterior genials nearly equal; red blotches 29 on body and seven on tail. This species is as yet unknown from Nevada, Oregon, and Utah. 25. Thamnophis sirtalis concinnus (Hallowell) Our collections include ten specimens of this garter-snake. These are one (No. 45428) taken at Boise, Ada County, July 17, 1918, and nine (Nos. 45770-45778) from McCall," Boise County, August 6-11, 1918. They have the following scale- counts : 46 CALIFORNIA ACADEMY OF SCIENCES TProc. 4th Sek. 26. Thamnophis ordinoides vagrans (Baird & Girard) This garter-snake is common in Idaho, whence we have re- ceived fifty-two specimens. Many of these have been recorded in our paper on the garter-snakes of western North America (Proc. Cal. Acad. Sci., Ser. 4, Vol. VIII, No. 6, 1918, pp. 241-244). Since the publication of that paper, thirty-nine specimens have been received as follows: Six (Nos. 45411-45416) col- lected at Boise, Ada County, June 6 to September 16, 1918; eight (Nos. 45757-45764) from McCall, Boise County, Au- gust 10-11, 1918; three (Nos. 45765-45767) from Little Pay- ette Lake, August 11, 1918; two (Nos. 45768, 45769) from North Fork of Lake Fork Creek, Boise County, August 7, 1914; ten (Nos. 45864-45873) from Warm Springs Creek three miles west of Ketchum, Blaine County, August 29-30, 1919; and ten (Nos. 47732-47741) from Bear Lake, Bear Lake County, July 17-22, 1920. The scale-counts of these speci- mens are given below. Vol. XI] VAN DENBURGH-SLEVIN— AMPHIBIANS AND REPTILES 47