Contributions to Neotropical Herpetology. 



ROBERT BAIRD McLAIN. 



The following is a list of Neotropical reptiles in the collection of 

 the Zoolofrical Department of Stanford University, obtained from 

 several different sources. The specimens from Mazatlan, Mexico, 

 were brought back by the fitst Hopkins' Expedition and those from 

 Panama, U. S. of Colombia, and Acajutla, Salvador, were secured by the 

 second Hopkins' Expedition. For both of these trips the Department 

 was indebted, both financially and otherwise, to Mr. Timothy Hopkins, 

 of Menlo Park, Cal. The specimens from Retalhuleu, Guatemala, 

 were collected during the winter (May) of 1895, by Mr. Arnold F. 

 Rothstern, who presented them to the Department. Those from 

 scattering localities in Mexico were procured bv Mr. A. J. Woolman, 

 who also presented them to the collection. The Lower Californiau 

 reptiles were mostly secured by Mr. J. F. AbVjolt. 



The writer regrets to say that lack of time has prevented him 

 from working up about half a dozen more of the snakes, while lack 

 of material for comparison and absence of proper literature has pre- 

 vented him Irom mentioning about the same number of lizards and 

 the turtles of the collection. In all cases the numbers are i;iven with 

 the double purpose of confirming the following statements and to in- 

 sure a correct interpretation of them in the future. 



1 also desire to express my satisfaction toward the drawings of 

 the new species made by my friend Mr. Wm. S. Atkinson, artist of 

 the Zoological Department. 



ORDER. SQAMATA, 

 SUBORDER. SAURI. 



FAMILY. GECKONIDiE. 



1. Gonatodes fuscus (HALLOWELL). Two geckos (3516- 

 3517) of this species were secured at Panama, U. S. of Colombia, and 

 two others t3o24-352()) at Acajatla, Salvador. 



FAMILY. IGUAXID.E. 



2. Basiliscus vittatus WIEGMANN. Five specimens of this 

 lizard (2850, 2852, 2857-2959) are from Retalhuleu, Guatemala, and one 

 (3528) from Acajutla, Salvador. 



3. Basiliscus gutt'Efatlis COPE, j A number of these (3482, 

 3483, 3470-3481, 3504-3514) were collected by the Hopkins Expedition 

 to Panama. Nos. ."i472 and 8473 are large, measuring lenghth to vent 

 150 mm, total length 495 mm and lenth to vent 135 mm, total length 

 415 mm, respectively. The others are of various sizes, but all much 

 smaller. 



I am at present inclined to agree with Prof. Cope in considering 

 this a distinct and separable species. The two specimens mentioned 

 above are raucli larger than those of B. tittitus in the collection and 

 are distinguishable at once from them. 



J Jouin. Ami., Pbila., 1875, p, 156, and BuH. U. S. Nat. Mus. No. 32, J8S7, p. 32. 



