ZOOLOGICAL SERIES OF FIELD MUSEUM OF NATURAL HISTORY Volume XX CHICAGO, OCTOBER 31, 1936 No. 18 NOTES ON SNAKES FROM YUCATAN BY KARL P. SCHMIDT ^HE LIBRARY OF THE ASSISTANT CURATOR OF AMPHIBIANS AND REPTILES NOV161936 E. WYLLYS ANDREWS UNIVERSITY OF ILLINOIS During a stay in Yucatan from December through June, 1934, while engaged in other duties, the junior author accumulated a small collection of reptiles and amphibians from the vicinity of Chichen Itza, amounting to thirty-seven specimens. To these were added a collection of twenty-one snakes and five lizards presented by Miss E. R. Blackburn of the Colegio Americana at Merida. Other Yucatan collections in Field Museum include nine specimens pre-sented by Dr. George Gaumer in 1899, and three lizards collected by Dr. Charles Millspaugh in the same year. Two crocodiles and two turtles collected on Cozumel Island and two turtles from Telchac Puerto, Yucatan, were obtained by exchange from Mr. W. T. Broughman. We are indebted to Dr. Thomas Barbour and Mr. Arthur Loveridge, of the Museum of Comparative Zoology at Harvard University, for the opportunity to examine the considerable number of snakes from Chichen Itza accumulated there through the interest of Messrs. Leon J. Cole, E. H. Thompson, and Oliver Ricketson, and Drs. Joseph C. Bequaert, George Shattuck, and J. H. Sandground. A part of this material was reported upon by Barbour and Cole (1906); in the present paper have been added the scale counts for the specimens in this collection not listed by them, or subsequently received. We are indebted to Dr. Sylvanus G. Morley, Director of the Chichen Itza Project of the Carnegie Institution, for numerous favors. Thanks are due to Mrs. Helen T. Gaige, of the Museum of Zoology of the University of Michigan, for permission to examine Yucatan collections at that institution. In the arrangement of the snakes of the genus Leptodeira, we have followed MS. notes by Dr. E. R. Dunn, who has a review of this genus in preparation. Thanks No. 372 167
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