460 PROCEEDINGS OF THE ACADEMY OF [1897. 



REPTILES FROM SONORA, SINALOA AND JALISCO, MEXICO, WITH A 

 DESCRIPTION OF A NEW SPECIES OF SCELOPORUS. 



BY JOHN VAN DENBURGH. 



This paper is an enumeration of the species of reptiles contained 

 in three small collections, and is presented in the hope that it may 

 be of use to those who are interested in the distribution of Mexican 

 lizards and snakes. Two of these collections are in the California 

 Academy of Sciences: the first, gathered in Sonora by Dr. Gustav 

 Eisen and Mr. Walter E. Bryant in April and May, 1S92; the 

 second, due to the efforts of Dr. Eisen and Mr. Frank H. Vaslit in 

 Sinaloa and Jalisco in October and November, 1894. The third 

 collection was secured by Dr. David Starr Jordan and a j)arty of 

 students at Mazatlan in December, 1894, and January, 1895, and is 

 in the Zoological Museum of Leland Stanford Junior University. 



1. Phyllodactylus tuberculosus Wiegm. 



A fine specimen of this gecko (Cal. Acad. Sci., No. 3,389) was 

 obtained at Matzalan, Sinaloa, in October. The California Academy 

 possesses two specimens (248, 249) secured in Durango by Mr. C. A. 

 Hamilton. 



2. Gehyra mutilata (Wiegm.). 



Eighteen specimens of this lizard (C. A. S.. 3,350-3,367) were 

 collected at San Bias and one (C. A. S., 3,180) at Tepic, Jalisco. 

 Females taken in October contain eggs which must have been nearly 

 ready for laying; femoral pores vary from eleven to twenty on each 

 side. In connection with Dr. Giinther's suggestion that this species 

 has been recently introduced into America, 1 it may be of interest to 

 note that geckos sometimes come to San Francisco in the holds of 

 vessels. 



3. Coleonyx variegatus Baird. 



Several specimens were caught at San Miguel de Horcasitas, 

 in Sonora, in April, 1892. 



4. Anolis nebulosus (Wiegm.). 



Dr. Eisen and Mr. Vaslit secured this species (3,181-3,188) at 

 Tepic, Jalisco, in October. The California Academy possesses also 



l Biol. Centr. Amer. Rept., 1893, p. 81. 



