20 COLUBEID^, 



2. Phrynonax poecilonotus. 



Spilotes poecilonotus, part., Gilnth. Cat. p. 100 (1858), and Biol. 



C.-Am., Jiept p. 117, pi. xliii. (1894). 

 ? Spilotes pcBcilonotiis, Bocourt, Miss. Sc. Me.r., Eept. p. 691, 



pi. xliii. tig. 4 (1888). 

 Spilotes arg-us, Bocourt, I. c. p. 692, pi. xlviii. fig. 10.* 



Rostral broader than deep, just visible from above ; internasals 

 shorter than the prsefrontals ; 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 praeoenlar, not in contact with the 

 frontal ; two postociilars ; temporals 2 + 2 ; eight or nine upper 

 labials, fourth and fifth, or fourth, fifth, and sixth, entering the 

 eve ; sis; or seven lower labials in contact with the anterior chin- 

 siiieids, 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 ISOO millim.; tail 500. 



Central America. 



a. 2 (V. 208 ; C. 133). Honduras. (Type.) 



b. 2 (V. 202; C. 132). Vera Paz. O.Salvin, Esq. [C.l 



c. 2 (V. 201; C. 126). Guatemala. L. Greening, Esq. [P.]. 



3. Phrynonax guentheri. 



Spilotes argus {non Bocourt), Gilnth. Biol. C.-Am., Bept. p. 118, 

 pi. xliv. (1894). 



Rostral a little broader than deep, just visible from above ; inter- 

 nasals a little shorter than the prjefrontals ; 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 prfcocular, 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. 



