224 COLUBRID. 
15. Homalocranium bocourti. 
Homalocranium coronatum (non B. § G.), Bocourt, Miss. Sc. Mez., 
Rept. p. 589, pl. xxxvii. fig. 5 (1883). 
— bocourti, Giinth. Biol. C.-Am., Rept. p. 149 (1895). 
Eye half as long as the snout. Rostral a little broader than deep, 
visible from above; internasals more than half as long as the pre- 
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 preocular; two postoculars; temporals 141; 
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 millim. ; tail 50. 
Mexico. 
a. 5 (V.172; C. 55). Guanajuato. Paris Mus. [E.]. (Type. 
16. Homalocranium reticulatum. 
Tantilla reticulata, Cope, Proce. Ac. Philad, 1860, p. 77, and Proc. 
U.S. Nat, Mus. xiv. 1892, p. 598. 
SASL ot reticulatum, Giinth, Biol. C-Am., Rept. p. 152 
)s 
Rostral 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 preocular; two post- 
oculars; temporals 1+1; seven upper labials, third and fourth 
entering the eye; two pairs 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, 
