454 AMBLTCEPHAilDa). 



deep, scarcely visible from above ; internasals not more than half 

 as long as the prsefrontals ; frontal as long as broad, or slightly- 

 broader than long, as long as or shorter than its distance from the 

 end of the snout, much shorter than the parietals ; nasal entire or 

 semidivided, rarely divided ; loreal as long as deep or a little 

 longer than deep, bordering the eye ; a prseocular rarely present ; 

 praefrontal usually entering the eye ; two or three postoculars ; 

 temporals 1 or 2+2 or 3 ; seven or eight, rarely six, upper labials, 

 third, third and fourth, fourth and fifth, or third, fourth, and fifth 

 entering the eye j first lower labial in contact with its fellow behind 

 the sympl^fia,al^ two to four pairs of chin-shields, anterior as long 

 as broad or a little longer than broad. Scales in 15 rows, vertebrals- 

 feebly or moderately enlarged. Ventrals 156-180 ; anal entire 

 (rarely divided) ; subcaudals 53-90. Pale brown above, with 

 small darker spots and dots, and with light-edged blackish-brown 

 cross-bands or alternating transverse spots ; head with dark brown,^ 

 light-edged spots ; yellowish beneath, spotted or dotted with dark 

 brown. 



Total length 720 millim. ; tail 170. 



Brazil, Ecuador, Colombia. 



A. Dark cross-bands wide ; belly dotted with brown, or with two- 



series of small brown spots. {L. mikani, Schleg.) 



a, b. S (V. 160 ; C. 61) Eio Grande do Sul. Dr. H. v. Ihering [0.1. 

 & S (V. 168 ; 0. 55). 



c. Yg. (V. 167 ; 0. 70). Brazil. 



B. CroBS-bands narrow ; belly as in the preceding. 



«, i-c. (S (V. 163 ; 0. Pemambuco. Zoological Society. 



65), hgr. (V.172;C. 



62), & yg. (V. 177 ; 



C. 60). 

 d,e. 5 (V. 170, 172; Bahia. Dr. 0. Wucherer [0.1. 



0. 61, 63). 

 /. Hgr. (V. 156 ; C. 63). Eio Janeiro. A. Fry, Esq. [P.]. 



g. $ (V. 168; C. 73). Porto Real,Prov. Eio M. Hardy du Drtoeuf 



Janeiro. [C]. 



*.Hgr.(V.161;C.68). Brazil. 

 i. 5 skeleton. Brazil. Dr. Giinther [P.]. 



C. Ventrals with large dark brown or black spots, (i. oreas, Cope.) 



a-c. $ (V. 179, 175, W. Ecuador. Mr. Eraser [0.1. 



173 ; 0. 73, 66, 76). 



d. $ (V. 164 ; 0. 65). Pallatanga, Ecuador. Mr. 0. Buckley [0.]. 



10. Leptognathus ventrimaculata. (Piaie XXIY. fig. 2.) 



Leptognathus \6rAr\m&c,VihXViS,Bouleng.Ann.SfMag.N.II. (5) xvi.^ 

 1885, p. 87 ; Peracca, Boll. Mus. Torino, x. 1895, no. 195, p. 21 



Body feebly compressed. Eye moderate. Eostral broader thatt 



