22 COLUBRID. 
closely speckled or powdered with brown. Adult uniform dark 
olive-brown. 
Total length 1500 millim. ; tail 400. 
Guianas and Amazons. 
a..2 (V. 201; C. 129). British Guiana. Demerara Museum. 
3 MOE 2005 C. 125). Surinam. 
c. 2 (V. 207 ; C. 120). PeruvianAmazon. Mrz. E. Bartlett (C.]. 
6. Phrynonax eutropis. (Prarz I. fig. 1.) 
Spilotes fasciatus, part., Giinth. Ann. & Mag. N. H. (A) ix.- 1872, 
p: 20. 
Rostral broader than deep, just visible from above; internasals 
as long as the prefrontals ; frontal slightly longer than broad, as 
long as its distance from the end of the snout, as long as the 
parietals ; loreal longer than deep ; one preocular, forming a suture 
with the frontal; two postoculars; temporals 24+2; eight upper 
labials, fourth, fifth, and sixth entering the eye, eighth very long; 
seven or eight lower labials in contact with the anterior chin- 
shields, which are much shorter than the posterior. Scales in 25 
rows, the dorsals very strongly keeled, the keels forming continuous 
raised lines in the middle of the body. Ventrals very obtusely 
angulate, 191; anal entire; subcaudals 126. Uniform brown 
above; upper lip and anterior lower surfaces yellow; belly turning 
to olive-brown towards the tail. 
Total length 1450 millim.; tail 430. 
Habitat unknown. 
a. 3 (V. 191; 0. 126). =p 
7. Phrynonax chrysobronchus. 
Spilotes chrysobronchus, Cope, Journ. Ac. Philad. (2) viii. 1876, 
p. 186, pl. xxviii. fig, 11; Bocourt, Miss. Sc. Mex., Rept. p. 695 
(1888). 
Rostral as deep as broad ; internasals nearly as long as the pre- 
frontals ; frontal about once and two fifths as long as broad, as long 
as its distance from the end of the snout, as long as the parietals ; 
loreal longer than deep ; one preocular, nearly touching the frontal ; 
two postoculars ; temporals 2+ 2; seven upper labials, third, fourth, 
and fifth entering the eye, Jast very long; seven lower labials in 
contact with the anterior chin-shields, which are nearly as long as 
the posterior. Scales in 25 rows, all smooth except the row next 
to the vertebral, which is weakly keeled: Ventrals 220; anal 
entire ; subcaudals 117. Brown, ‘he scales dotted with lighter ; 
head darker ; one or more borders of the’ scales black; upper lip, 
throat, and anterior part of belly yellow ; remainder of lower sur- 
faces passing from brown to black below the tail. POR NEARED | 
Total length 1670 millim. ; ‘tail 422. é ; " 
Coast of Costa Rica. Paes 
