100 BOID^. 



visible from above ; nasals in contact behind the rostral, followed 

 by a pair of large prsefrontals ; a series of enlarged supraoculars, 

 separated from the eye by one series of scales ; 9 to 18 scales from 

 eye to eye across the forehead, and 11 to 14 round the eye ; one or 

 two large prseoculars and two large loreals ; 11 to 14 upper labials, 

 strongly pitted below and behind the eye, the anterior more or less 

 distiuctly pitted ; anterior lower labials not pitted. Scales in 30 to 

 47 rows. Ventrals 253-285; anal entire; subcaudals 101-118. 

 Coloration very variable. 



Total length 1550 millim. ; tail 320. 



Colombia, Venezuela, British Guiana, Trinidad, and Windward 

 Islands of the "West Indies. 



A. Pale yellowish or greyish brown above, with two parallel or 

 alternating series of large rhomboidal dark brown spots, 

 descending to the sides, and which may inclose a yellowish 

 ocellus ; upper surface of head with dark brown or black spots 

 or marblings, and two dark streaks on each side behind the 

 eye; lower parts yellowish, spotted with brown. (C coohii, 

 Gray.) 



a. Her. <S (Sc. 45 ; V. 270 ; W. Indies. E. Cooke, Esq. [P.]. 



0.118). . (Type.) 



6. $ (Sc. 43 ; V. 273 ; 0. St. Vincent. Mr. H. H. Smith [0.]. 



118). F. D. Godman, Esq. 



[P.]. 



c. 2 (Sc. 45 ; V. 263 ; C. Becquia Island, Mr. H. H. Smith [0.]. 



108). Grenadines. F. D. Godman, Esq. 



[P.]. 

 . Murr; 



d-f. Hgr. c? (Sc. 41, 41 ; Island of Grenada. G. Murray, Esq. [P.J. 



V. 273, 273 ; 0. 113, 



107) & $ (Sc. 41; 



V. 262 ; C. 106). 

 y. c? (Sc. 43; V. 264; British Guiana. Sir R. Schomburgk [P.]. 



C. 112). 



B. Blackish brown above, variegated with yellowish lines (the 



borders of the markings of the typical form) ; belly blackish 

 brown. (Var. melanea, Gray.) 



h. 2 (Sc. 43; V. 273; St. Vincent. Zoological Society. 



0.?). 

 i. $ (Sc. 43 ; V. 264; C. Trinidad. J. H. Hart, Esq. [P.]. 



107). 



C. TeUowish brown above, uniform or with mere traces of the 



dark markings ; beUy yellow, without spots. 



yt-re. d' (Sc. 41; V. 268; Island of Grenada. G. Murray, Esq. [P.]. 

 0. 101), $ (Sc. 43, 

 41; V. 270, 264; 0. 

 109, 106), & yg. (So. 

 43; V.253; 0. 106). 



