1893.] NATURAL SCIENCES OF PBILADEI.PHIA. 429 



NOTES ON SOME SNAKES FROM TROPICAL AMERICA LATELY 



LIVING IN THE COLLECTION OF THE ZOOLOGICAL 



SOCIETY OF PHILADELPHIA. 



By ARTHUR ERWIN BROWN. 



Nearly all of the specimens on which these notes are based, are 

 now in the Academy's collection, but have all been living in the 

 garden of the Zoological Society. The greater number of them were 

 contained in a collection made by Dr. O'Reilly, of Trinidad, who is 

 responsible for the localities of collection in these cases. The colors 

 given, were in all cases, taken from the living specimen. 



Boa diviniloqua (Lain - .). 



One specimen from St. Kitts. 65 rows of scales ; ventrals, 266 ; 

 subcaudals, 54; 16 scales in orbital ring; in contact with labials, 

 15 scales across top of head, between orbits ; thirty-two spots on body; 

 six on tail. Total length, 1,700 mm. (tail 152). 



Boa imperator Daud. 



One specimen, probably from Vera Cruz. 68 rows of scales ; 

 ventrals, 246; subcaudals, 66 ; 19 scales in orbital ring ; in contact 

 with labials on one side, separated by one row of scales on the other ; 

 13 scales between orbits; twenty-two spots on body, four on tail. 

 Total length, 1,010 mm. (tail 105). 

 Ungualia melanura (Schlegel). 



Three specimens from Cuba. 



(a). 27 rows of scales, three exterior smooth ; ventrals, 202 ; 

 subcaudals, 40. Total length, 571 mm. (tail 76). 



Body color dark gray, slightly lighter on sides ; abdomen and 

 five exterior rows of scales, light gray ; a row ot small dark spots 

 alternating on each side of the back ; two rows of black dots on the 

 first and fifth rows of scales, about five scales apart longitudinally. 

 An occasional similar dot on the ventrals ; top of head, dark ; sides 

 of head, chin and throat, light gray maculated with black. 



(6) 27 rows of scales, three exterior smooth; ventrals, 201. Total 

 length, 533 mm. (tail broken). 



Color very similar to specimen a. The sides and belly have a 

 salmon tinge and the dorsal spots tend to coalesce into a zigzag line. 



