36 Dr. A. Giintlier 07i new Species of Snakes. 



cated below the nostril only ; one praB-, two postoculars. Six 

 upper labials, the sixth the largest, as long as the fourth and 

 fifth together. Temporals 1 + 2 + 3, the anterior the largest, 

 the others scale-like. Ventrals 216 ; anal bifid ; subcaudals 

 ca. 70. Uniform brown above ; a few scales, irregularly scat- 

 tered, are black. Ventral shields yellowish, with a blackish 

 margin. 



The Bi-itish Museum received one example from Mr. Krefft, 

 without indication of the exact locality ; it is 54 inches long, 

 tail 9 inches. 



Elaj)s onuUifasciatus (Jan). 



I am not quite certain whether, by using this name, I have 

 correctly determined two specimens — one from Nicaragua 

 (Chontales), and the other from Bogota. Our specimens have 

 only 239 ventral shields, whilst Jan states 278. One of the 

 principal characters of our specimens is that the anteocular is 

 in contact with the nasal ; and, unfortunately, the figure given 

 by Jan is so indistinctly drawn, that the arrangement of the 

 shields of the snout cannot be made out. 



Atractaspis corpulentus (Hallo well). PL III. fig. F. 



Having recently received an Atractaspis from the Gaboon 

 (that is, the locality where Hallowell's original specimen was 

 obtained), I find that it agrees so well with Hallowell's de- 

 scription that I cannot entertain a doubt about its identifica- 

 tion. I find at the same time that I was mistaken in referring 

 a specimen noticed in Ann. & Mag. Nat. Hist. 1866, xviii. 

 p. 29 to this species, and that that specimen belongs to another 

 (sixth) species, which is not yet named. The characters of 

 the true A. corpulentus are as follows : — 



Black above, blackish below. Body stout. Ventrals 179 

 (-182, Hallowell) ; subcaudals (25, Hallowell, -)27. Scales 

 in twenty-five series. Normally two pairs of frontals. One 

 prse-, one postocular. Five upper labials, the third and fourth 

 entering the orbit. Temporals 1+3, the anterior very large, 

 in contact with the occipital, postocular, fourth and fifth la- 

 bials. The first pair of lower labials in contact with each 

 other ; the pair of chin-shields following these labials form 

 part of the labial margin ; the succeeding lower labial rather 

 shorter than the opposite third and fourth upper labials. 



Atractaspis micropJioUs. PI. IH. fig. E. 



AtractMspis corpulentus, Giinth. in Ann. & Mag. Nat. Hist. 1866, xviii. 

 p. 29, nee Hallowell. 



Black above, lighter below. Body stout. Ventrals 210 ; 

 subcaudals 29. Scales in twenty-five series. Two pairs of 



