38 



COLUBEID.E. 



and fifth (or fifth and sixth) entering the ere ; four or five lower 

 labials in contact with the anterior chin-shields, which are as long 

 as the posterior. Scales in 31 to 35 rows, posterior dorsals faintly 

 keeled. Ventrals 243-282; anal divided; subcauduls 91-119. 

 Young pale brown above, with one or two dorsal series of large 

 dark brown black-edged spots, and an alternating lateral series of 

 smaller spots ; two or three dark brown stripes on the occiput and 

 nape ; two dark brown curved bands across the snout ; adult uniform 

 brown ; lower parts uniform yellowish. 



Total length 610 millim. ; tail 115. Reaches a length of over 

 1 metre. 



Mexico and Central America. 



M. Sails [C.]. 

 Mr. Doorman [C.]. 



a. Hgr. (Sc. 35 ; V. 264 ; Mexico. 

 C. 95). 



b. Yjr. (Sc. 35 ; V. 254 ; City of Mexico. 

 C. 91). 



c. Yg. (Sc. 35; V. 260; Mexico. 

 C. 102). 



d. Hgr. (Sc. 35 ; V. 267 j Mezquital del Oro, Dr. A. C. Buller [C.]. 

 C. 100). Zacatecas. 



10. Coluber chlorosoma. 



Coluber chlorosoma, Giinth. Biol. C.-Am., Kept. p. 115, pi. xli. 

 (1894). 



Rostral considerably broader than deep, just visible from above ; 

 internasals nearly as long as broad, or broader than long, much 

 shorter than the praefrontals ; frontal once and one fourth or once 

 and one third as long as broad, as long as its distance from the 

 rostral or the end of the snout, shorter than the parietals ; loreal 

 longer than deep ; one praeocular; two postoculars ; temporals 3 + 3 

 or 3 + 4 ; eight or nine upper labials, fourth and filth or fifth and 

 sixth entering the eye ; tour lower labials in contact with the 

 anterior chin-shields, which are not longer than the posterior. 

 Scales in 33 rows, smooth or posterior dorsals faintly keeled. Ven- 

 trals 247-260 ; anal divided ; subcaudals 107-112. Uniform pale 

 greyish above and on the outer ends of the ventrals, white beneath. 



Total length 1050 millim. 



Mexico. 



a. c? (V. 260; C. ?). Atoyak, Guerrero. 



b. <J (V. 247 ; C. 112). Amula, Guerrero. 



Mr. II. II. Smith 

 [C.] ; F. D. Gor- 

 man, Esq. [P.]. 



Mr. H. II. Smith 

 [C ] ; F. D. God- 



c. Head and neck. S. Ramon, Jalisco, Dr. A. u. Jiuller 



1500 ft. 

 rf. c? (V. 247 ; C. 107). S. Mexico. 



man, Esq. [P.]. 

 . C. Buile 



F. D. Godman, Esq. [P.]. 



Should perhaps rank as a variety of the following species. 



