222 COLITBKIDiE, 



a. cT (V. 135 ; 0. 38). Guatemala. F. D. Godman, Esq.[P.]. 



b. Hgr. cj (V. 130 ; Matagalpa, Nicaragua. Dr. Eothschuh [C.]. 

 0. 32). 



11. Homalocranium canula. 



Taiitilla canula, Cope, Journ. Ac. Philad. (2) viii. 1876, p. 144. 

 Homalocranium canulum, Giinth. Biol C.-Am., Kept. p. 163 (1895). 



Snout rather wide, but projecting beyond the mouth, Prontal 

 rather small, hexagonal, longer than its distance from the rostral ; 

 two postoculars ; temporals 1 + 1 ; seven upper labials, third and 

 fourth entering the eye ; first lower labial separated from its fellow 

 by the symphysial ; four lower labials in contact with the anterior 

 chin-shields, which are longer than the posterior. Scales in 15 rows. 

 VentralsllO; anal divided; subcaudals 37. Colour leaden, darker 

 above ; head-shields with paler borders and centres. 



Total length 172 millim. ; tail 37. 



Yucatan. 



12. Homalocraniuin miuiattun. 



Tantilla miniata, Cope, Proc. Ac. Philad. 1863, p. 100, Journ. 



Ac. Philad. (2) viii. 1876, p. 144, and Proc. U.S. Nat. Mus. xiv. 



1892, p. 597. 

 Homalocranium deppii, Bocourt, Miss. 8c. Mex., Sept. p. 584, 



pi. xxxvi. fig. 11 (1883) ; Gunth. Biol. C.-Am., Sept. p. 151 



(1895). 

 Tantilla deppei, Cope, Bull. U.S. Nat. Mus. no. 32, 1887, p. 83. 

 Homalocranium miniatum, Giinth. I. c. p. 146. 



Eye about half the length of the snout. Rostral a little broader 

 than deep, visible from above : internasals about hsilf as long as the 

 prsefrontals ; frontal hexagonal, obtuse-angled in front, acute-angled 

 behind, once and one third as long as broad, longer than its distance 

 from the end of the snout, shorter than the parietals ; nostril be- 

 tween two nasals, much nearer the internasal than the first labial ; 

 posterior nasal in contact with the preeocular ; two postoculars ; 

 temporals 1-1-1 ; seven upper labials, third and fourth entering the 

 eye ; first lower labial separated from its fellow, the symphysial 

 reaching the anterior chin-shields ; four lower labials in contact 

 with the anterior chin-shields, which are a little longer than the 

 posterior. Scales in 15 rows. Ventrals 147-152 ; anal divided ; 

 subcaudals 65. Pale brown above, with five dark brown longitu- 

 dinal lines ; head dark brown above, yellowish on the sides ; a 

 yellow bar across the occiput, divided in the middle by the dark 

 vertebral line ; lower parts yellowish white (red in life). 



Total length 270 millim. ; tail 65. 



Mexico. 



a. (J (V. 152 ; 0. 55). S. Mexico. F. D. Godman, Esq. [P.]. 



