18 



COLtlBRTD^. 



m-p. S (V. 154; C. P) & 

 2 (V. 149, 150, 154 ; 

 C. ?, ?, 114). 



q-s. d> (V. 147, 152, 151 ; 

 C. ?, 119, 123). 



t. 5 (V. 152 ; C. 126). 



u-v. S (V. 151, 153 ; C. 



101, 125). 

 w. e {V. 156; C. 117). 

 .r, y. 2 (V. 150, 148 ; 



C. ?, ?). 

 z. 2 (V.'l54; C. ?). 

 a. Hgr. (V. 154; C. 120). 

 0. Skull. 



Teapa, Tabasco. 



Atoyac, GueiTero. 

 Omilteme, Guerrero. 



de 



Sto. Domingo 



Guzman. 

 Belize. 

 Honduras. 



Duefias, Guatemala. 



Caracas. 



Vera Cruz. 



F. D. Godmau, Esq. 



[P.]. 



F. D. Godman, Esq, 



[P.]. 

 F. D. Godman, Esq. 



[P.]. 

 Dr. A. C. BuUer [C.]. 



Dr. Gunther [P.]. 

 0. Salvin, Esq. [C.]. 



58. PHRYNONAX. 



Spilotes, part., Dum. 8f Bihr. Erp. Gen. vii. p. 218 (1854) ; Giinth. 



Cat. Col. Sn. p. 96 (1868) ; Jan, Menco sist. OJid. p. 62 (1803) ; 



Bocourt, Miss. So. Max., Kept. p. 685 (1888). 

 Phrynonax, Cope, Proc. Ac. Philad. 1862, p. 348. 



Maxillary teeth 15 to 20, the posterior slightly enlarged ; anterior 

 mandibular teeth longest. Head distinct from neck ; eye large, 

 with round pupil ; no suboculars. Body elongate, compressed ; 

 scales more or less distinctly keeled, disposed obliquely on the sides, 

 in 21 to 25 rows ; ventrals obtusely augulate laterally. Tail long ; 

 subcaudals in two rows. 



Tropical America. 



Fig. 3. 



Maxillary and mandible of Phrynonax stdphureus. 



Synopsis of the Species. 

 I. Scales in 21 or 23 rows. 



A, Scales strongly keeled on the middle of the back. 



Three postoculars ; temporals 1 + 1. .. . 1. sulphureus, p. 19. 

 Two postoculars ; temporals 2 + 2 .... 2. poecilonotus, p. 20. 



B. Scales feebly keeled. 



Praeocular separated from the frontal ; 



ten upper labials 3. guentheri, p. 20. 



Prreocular separated from the frontal ; 



nine upper labials 4. lunulatus, p. 21. 



