226 bulletin: museum of comparative zoology. 



TYPHLOPIDAE. 

 11. Typhlops emunctus Gakman. 



Distribution. — Panama. 



A single specimen from San Miguel Island, 135 mm. in length, appears to 

 belong to this species. It is in rather poor preservation, and the details of 

 the head scales are very vague. 



BOIDAE. 



12. Epicrates sabogae, sp. nov. 



Types. — No. 6986, Mus. Comp. Zool. 



Two specimens, one entire, and one skin from Saboga Island. 



This island species approaches E. cupreus Fischer in color. It is rather dark 

 reddish l)rown. Its squamation, however, distinguishes it at once from the 

 mainland form. The scales are extremely small. Boulenger (Cat. Snakes, 

 Brit. Mus., vol. 2, p. 95) says that the scales in E. cenchris are in 45-51 rows; 

 he also includes E. cupreus in this species. The Saboga specimens have scales 

 in 65 and 67 rows, an excess of 14 and 16 over the maximum number for 

 E. cenchris. The number of ventrals and subcaudals, 242 and 247, and 49 and 

 70, do not show any great variation from the continental form, though 70 is 

 4 in excess of the largest ventral scale count cited by Boulenger. Both speci- 

 mens are the same size and measure four feet in length. The perfect specimen 

 appears to be an adult male. 



COLUBRIDAE. 



13. Spilotes salvinii Gunthek. 



Distribution. — Mexico and Central America. 



Two large specimens were taken on San Miguel Island. 



14. Herpetodryas fuscus (Linne). 



Distribution. — Tropical South America. 



With this very variable species I identify two snakes from San Miguel 

 Island and eight from Saboga Island. 



15. Drymobius margaritiferus (Schlegel). 



Distribution. — Mexico to Colombia and Venezuela. 

 Three examples from Panama. 



16. Leptophis occidentalis (Gun-ther). 



Distribution. — Central and Northwestern South America. 

 Six specimens from San Miguel Island. 



