218 PROCEEDINGS OP THE ACADEMY OF 



equal. Interorbital region transversely convex, as wide as the 

 diameter of the orbit. Dorsal fiu originating a little behind that 

 of the ventral. 



General form elongate rhombic. Depth 2.5 times in length less 

 caudal fin ; length of head 4 times in same. Eye 3.2 times in 

 head. Total length five inches. Color of superior half of head 

 and body blackish ; a vertical clavicular dark band, a leaden band 

 from its upper margin to basis of caudal fin terminating in a P3'ri- 

 form black blotch of considerable size, which is prolonged on the 

 caudal radii. Below, yellowish-white. Fins unicolor. 



From the head-waters of the Coatzacoalcos River amons; the 

 Cordilleras. 



This species may be allied to those mentioned by Bocourt from 

 the rivers of Belize and Peten (Ann. Sci. Nat., XI.) ; but it will be 

 impossible ever to recognize them from the notes attached to the 

 names. 



lY. The collection made by Dr. Gabb was chiefly obtained near 

 the city of San Domingo, in the southeastern part of the island. 

 It embraces twenty species, as follows : — 



OPHIDIA. 



Dromicus parvifrons, Cope. 



Hypsirh.ynclius ferox, Gthr. (H. scalaris, Cope). 



This is no doubt the true habitat of this snake. 



Thrasops catesbeyi, D. B. 



" oxyrhynclius, D. B. 

 Ungualia maculata. 

 Homalochilus striatus, Fisch. 



LACERTILIA. 



Amiva vittipunctata, Cope. 

 Liocephalus raviceps, Cope. 

 Anolis coelestinus, Cope. 



" semilineatus, Cope 



" cybotes, Cope 



" distichus, Cope. 

 Hemidactylus. 

 Sphaerodactylus notatus, Baird. Abundant. 



[November 21, 



