LIST OF np:MIPTERA-HETEROPTERA OF LAS VE(;AS HOr SPRLNGS, NEW MEXICO, (COLLECTED BY MESSRS. E. A. SCHWARZ AND HERI^ERT S. BARBER. By PiiTLir R. Uhler, Provdd (if the J'lahodi/ Institute, Bdlthnorc, Mfirylaml. This small but instructive collection, now in the United States National Museum, from a restricted locality' hitherto neglected adds another link in the chain of evidence explaining the (ecology and sources of distribution of a considerable numl>er of local and widely dispersed forms of Hemiptera. 1 am informed b}' Mr. E. A. Schwarz that all specimens were collected in the vicinity of the Montezuma Hotel, which is situated at the mouth of the (lallinas River can3^on, at an altitude of 6,7T0 feet. Viewing-the materials here presented, I am impressed by the mixed character of the collection. In the genus Homa^mus are the ]Mexican upland II. jyroteus Stal, and the Rocky Mountain If. InjuglK Uhler. Coi'imeJaena is represented by onh' the far western (\ exteroid I^hler. Two species of Ihdlsus appear, the P. cyu!cus Say, an Alleghanian form, and the Canadian C. hractecdus Fitch, which by the aid of a larger series of recently collected specimens seems to ))e a sutficientl}'' distinct species. The interesting genus DciKlrocm'h is signalized by the presence of the Californian-desert species, I), frutlcos^is Bergroth, and by the eastern D. Iniiiiti'dlis Uhler. The collection when broadly considered, is seen to consist of widely distributed Rocky Mountain forms with a mixture of some far western and a few eastern species. The usual number of North American genera appear here as is generally the case in western collections, but the aquatic, riparian, and hypogean forms are scarcely represented. Family PACHYCORID.E. HOMiEMUS PROTEUS Stal. Homa'mwi proteus StAl, Stett. Ent. Zeit., XXIII, 18(52, p. .S2. A common insect in man}-parts of eastern Mexico, extending over the t)()undary into Texas and Arizona, and now for the tirst time found at Las Vegas Hot S])rings, New Mexico. August (Ml The writer has examined, also, specimens from the vicinity of Matamoras, from Tepic in southwestern Mexico, and from the vicinity of Cape St. Lucas, Lower California. It is everywhere exceptionally variable, both in form and pattern of markings. Proceedings U. S. National Museum, Vol. XXVII— No. 1360. 849
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