20 COLUBRID. 
2. Phrynonax pecilonotus. 
Spilotes pecilonotus, part., Giinth. Cat. p. 100 (1858), and Biol. 
C.-Am., Rept p. 117, pl. xliii. (1894). 
? Spilotes peecilonotus, Bocourt, Miss. Sc. Mev., Rept. p. 691, 
pl. xliii. fig. 4 (1888). ; 
Spilotes argus, Bocourt, 1. c. p. 692, pl. xlviii. fig. 10.* 
Rostral broader than deep, just visible from above; internasals 
shorter than the prefrontals ; frontal a little longer than broad, as 
long as its distance from the rostral, nearly as long as the parietals ; 
loreal longer than deep ; one preocular, not in contact with the 
frontal; two postoculars; temporals 2+2; eight or nine upper 
labials, fourth and fifth, or fourth, fifth, and sixth, entering the 
eye; six or seven lower labials in contact with the anterior chin- 
shields, which are as long as or a little shorter than the posterior. 
Scales in 23 rows, the dorsals very strongly keeled, the keels form- 
ing continuous raised lines in the middle of the body. Ventrals 
obtusely angulate laterally, 201-208; anal entire; subcaudals 
126-133. Blackish brown above, with yellow spots which may 
form a vertebral stripe ; upper lip yellow, with black edges to the 
shields; ventrals yellow with blackish edge; posterior portion of 
body and tail dark brown or black above and below. 
Total length 1800 millim.; tail 500. 
Central America. 
a. 2 (V. 208; C. 183). Honduras. (Type.) 
b. 2 (V. 202; C. 1382). Vera Paz. O. Salvin, Esq. [C.]. 
ce 2 (V. 201; ©. 126). Guatemala. L. Groctieg, Hedi Pal, 
3. Phrynonax guentheri. 
Spilotes argus (non Bocourt), Giinth. Biol. C-Am., Rept. p. 118, 
pl. xliv. (1894). 
Rostral a little broader than deep, just visible from above ; inter- 
nasals a little shorter than the prefrontals; frontal a little longer 
than broad, as long as its distance from the rostral, a little shorter 
than the parietals; loreal longer than deep; one preocular, not in 
contact with the frontal; two postoculars; temporals 2+2; ten 
upper labials, sixth and seventh, or fifth, sixth, and seventh, entering 
the eye; seven lower labials in contact with the anterior chin- 
shields, which are much longer than the posterior. Scales in 23 
rows, median dorsals faintly keeled. Ventrals obtusely angulate 
laterally, 213; anal entire. Black above, each scale with a yel- 
lowish spot ; the spots on the three vertebral series larger, forming 
a light stripe bordered with black; lateral scales greyish, with 
black border; head black above, with small yellowish spots; tail 
black, with yellowish spots forming four stripes, one above, one 
beneath, and one on each side; anterior ventrals yellowish, black- 
edged, posterior dark grey to black. 
* I have examined the type specimen in the Brussels Museum. 
