224 



U 



COltrBKID^. 



15. Homalocranium bocourti. 



Homalooramum coronatum (wore B. ^ (?.), BocouH, Miss. So. Mex.f 



Rept. p. 689, pi. xxxvii. fig. 6 (1883). 

 bocourti, Giinth. Biol. C.-Am., Bept. p. 149 (1895). 



Eye half as long as the snout. Eostral a little broader than deep^ 

 visible from above ; intern asals more than half as long as the prae- 

 frontals ; frontal pentagonal, or very slightly angulate in front, 

 acute-angled behind, once and one third to once and a half as long 

 as broad, longer than its distance from the end of the snout, shorter 

 than the parietals ; nostril between two nasals, the posterior in 

 contact with the prseocular ; two postooulars ; temporals 1+1; 

 seven upper labials, third and fourth entering the eye ; first lower 

 labial in contact with its fellow behind the symphysial ; three or 

 four lower labials in contact with the anterior chin-shields, which 

 are shorter than the posterior. Scales in 15 rows. Ventrals 172— 

 176; anal divided; subcaudals 55. Pale reddish above, without 

 spots or markings ; head black, with a yellowish cross-bar on the 

 snout and a yellowish,. black-edged occipital cross-bar just behind 

 the parietals ; upper lip and lower parts white. 



Total length 245 mUlim. ; tail 60. 



Mexico. 



a. 6 (V. 172 ; 0. 55). Guanajuato. Paris Mus. [E.]. (Type.) 



16. Homalocranium reticulatum. 



TantiUa reticulata, Cope, Proc. Ac. Philad. 1860, p. 77, and Pi-oc, 



U.S. Nat. Mus. xiv. 1892, p. 598. 

 Homalocranium reticulatum, OUnth. Biol. C.-Am., Bept. p. 152 



(1895). 



Eostral broad, visible from above ; frontal broad, slightly angulate 

 in front, acute-angled behind; nostril between two nasals, the 

 posterior of which is in contact with the prseooular ; two post- 

 ooulars ; temporals 1 -|- 1 ; seven upper labials, third and fourth 

 entering the eye ; two pfirs of chin-shields, the anterior in contact 

 with the symphysial. Scales in 15 rows. Ventrals 148 ; anal 

 divided ; subcaudals 67. Chestnut-brown above, much darker 

 posteriorly, the colour extending on the ends of the ventrals ;, 

 anteriorly, the scales are edged with darker, presenting a reticulated 

 pattern ; central row of scales lighter, forming a vertebral line ; 

 third and fourth rows on each side also lighter, forming indistinct 

 lines ; a yellowish-brown collar crosses the ends of the parietal 

 shields ; head-shields clouded and edged with darker ; a deep 

 brown mark extending from the parietals to the mouth across the 

 yellowish labials ; beneath pale yellow, deepening posteriorly. 



Total length 260 millim. ; tail 80. 



Panama. 



