100 BOIDE. 
visible from above; nasals in contact behind the rostral, followed 
by a pair of large prefrontals; 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 preoculars 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. cookii, 
Gray.) 
a. Hgr. d (Sc. 45; V.270; W. Indies. ch (Tyne) Esq. [P.]. 
©. 118). 
b. 44 (Se. 43; V. 273; C. St. Vincent. Mr. Cre Smith [C.]. 
18). F. D. Godman, Esq. 
c. 2 (Sc. 45; V. 263; C. uia Island, wen H. Smith [C.]. 
108). renadines. F. D. Stee Esq. 
d-f. Hgr. g (Sc. 41, 41;  IslandofGrenada. G. Vitrey, Esq. [P.]. 
¥. O73, 273; CO. 11 3, 
107) & Q (Se. 41; 
V. 262; G. 106). 
g: é (Se. 43; V. 264; British Guiana. Sir R. Schomburgk [P.]. 
. 112). 
B. Blackish brown above, variegated with yellowish lines (the 
borders of the markings of the a form); belly blackish 
brown. (Var. melanea, Gray.) 
h. eo (Sc. 43; V. 273; St. Vincent. Zoological Society. 
i. S (bs 43; V.264; C. Trinidad. J. H. Hart, Esq. [P.). 
C. Yellowish brown above, uniform or with mere traces of the 
dark markings; belly yellow, without spots. 
k-n. & (Se. 41; V. rs Island of Grenada. G. Murray, Esq. [P.}. 
C. 101), 9 (Se. 43 
41; V. 270, ee : 
109, 105), & g (Se 
43; V,253; onl ). 
