COLOMBIAN BATRACHIANS A\D REPTILES. 1035 



27. Leptophis ogcidentalis Gthr. 



28. LioPHis albiventris Jan. 



29. Atractus multicinctus Jan. 



In its coloration in the fresh condition (occipital blotch bright 

 red) this harmless snake is not without resemblance to Flaps 

 tnipartitus. 



30. Atractus iriuescens Peracca. 



This species was described (Boll. Mus. Torin. xi. 1896, Ko. 252) 

 from a single specimen, origin unknown. Three specimens in 

 Dr. Spurrell's collection may, I think, be referred to it. 



a. 2 • 255 mm.; tail 36. V. 144 ; C. 37. 

 h. 2 ■ 215 mm. ; tail 32. V. 134 ; C. 32. 

 c. Yg. 102 min. ; tail 11. Y. 143 ; C. 26. 



The iridescence from which the species derives its name is 

 strongly marked in these specimens. Dark brown above, with two 

 dorsal series of transverse blackish spots, which may alternate or 

 form cross-bars, and may be bordered by yellow dots or short 

 streaks ; in specimen a the belly is white spotted with black in 

 front, uniform black behind ; in specimen b it is white with a 

 median series of black spots and a series of smaller spots ' on 

 each side. 



31. Petalognathus nebulata L. 



32. himantodes cexchoa l. 



33. Leptodira albofusca Lacep. 



34. OxYRHOPUs CECELIA Daud. 

 A specimen two metres long. 



35. HOMALOCRANIUM MELANOCEPHALUM L. 



36. HOMALOCRANIUM CORALLIVENTRE, Sp. n. (PI. CYIII. fig. 1.) 



Eye about half as long as the snout. Rostral a little broader 

 than deep, the portion visible from above about half as long as its 

 distance from the frontal ; internasals about two thirds the length 

 of the prsefrontals ; frontal hexagonal, obtuse-angled in front, 

 acute-angled behind, nearly once and a half as long as broad, 

 longer than its distance from the end of the snout, shorter than 

 the parietals ; nostril between two nasals, the posterior of which 

 is in contact with the prfeocular ; two postoculars ; temporals 

 1 -f- 1 ; seven vipper labials, third and foui-th entering the eye, 

 seventh largest ; four lower labials in contact with . the anterior 

 chin-shields, which are a little shorter or a little longer than the 



