5S. PHETNONAX. 21 



Total length 13G0 miJlim. 

 Mexico. 



a. 2 (V. 213 ; C. ?). Atovac, Vera Cruz. Mr. H. H. Smith [C] : 



F. D. Godman, Esq. [P.]. 



4. Phrynonax lunulatus. 



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



a- Am., Rept. p. 117 (1894). 

 Tropidodipsas lunulata, Cope, Proc. Ac. Philad. 18G0, p. 517, and 



18152, p. 348. 

 Spilotes lunulatus, Cope, Bull. U.S. Nat. Mus. no. 32, p. 71 (1887). 



lunulatus, part., Bocourt, Miss. Sc. Mex., Rept. p. 694, 



pi. xlii. tig. 1 (1888). 



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

 nasals shorter than the prsefrontals ; frontal once and one third as 

 long as broad, as long as its distance from the rostral, slighth' 

 shorter than the parietals ; loreal a little longer than deep ; one 

 pra^ocular, widely separated from the frontal ; two postocnlars ; 

 temporals 2 + 3 ; nine ujjper labials, fourth, fifth, and sixth entering 

 the eye ; six or seven lower labials in contact with the anterior 

 chin-shields, which are a little longer than the posterior. Scales in 

 21 or 23 rows, dorsals feebly keeled. Ventrals very obtusely angu- 

 late, 202-204 ; anal entire ; subcaudals 1 26-136. Olive-brown 

 above ; young with crescent-shaped brown, black-edged cross bands 

 on the back, of which mere traces are left in the adult ; belly dotted 

 with brown. 



Total length 1380 millim. ; tail 380. 



Central America. 



a. tS (V. 202 ; C. 126). Mexico. Hr. Hugo Finck [C.]. 



(One of the types of S. poecilunotus.) 



5. Phrynonax fasciatus. 



Spilotes fasciatus, Peters, Mon, Berl. Ac. 18G9, p. 443. 



fasciatus, part., Giinth. Ann. Sf Mag. N. H. (4) ix. 1872, 



p. 20. 



Aliffitulla polylepis, Peters, Mon. Berl. Ac. 1867, p. 709. 



Spilotes lunulatus, part., Bocourt, Miss. Sc. Mex., Repit. p. 694 (1888). 



Hostral broader than deep, just visible from above; internasals 

 as long as or a little shorter than the prajfrontals ; frontal a little 

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

 nearly as long as the parietals ; loreal as long as deep or a little 

 longer ; one pra3ocular, in contact with or very narrowly separated 

 from the frontal; two postocnlars; temporals 2 -(-2; eight (or 

 nine) upper labials, fourth, fifth, and sixth (or fifth, sixth, and 

 seventh) entering the eye, last very long ; seven or eight lower 

 labials in contact with the anterior chin-shields, which are shorter 

 than the posterior. Scales in 23 rows, dorsals faintly keeled. 

 Ventrals very obtusely angulate, 191-207 ; anal entire ; subcaudals 

 120-132. Young pale brown above, with crescentic brown, black- 

 edged cross bands ; head pale brown, speckled with darker ; belly 



