NATURAL SCIENCES OF PHILADELPHIA. 297 
Rhinosimus (D. and B.) placed by Gtinther among the Calamarinz, differs 
only in the keeled, recurved rostral, and Rhinostoma Fitz. the only other 
genus with grooved maxillaries, has the recurved rostral, with divided urosteges, 
The form and glossy smoothness of the Olisthenes euphaeus admirably 
adapt it for making its way among pieces of bark, decayed logs, and other 
debris of the forest. Its native country is unknown to us, but as it was ob- 
tained in ajar containing a specimen of the species below mentioned, it proba- 
bly came from South America. 
CORONELLIN Ai. 
Liophis vittatus. Coluber vittatus Hallowell, Proceed. Acad. Nat. Sci., 
Vol. ii. p. 242. The serpent described as above, from specimens brought by 
Mr. Ashmead from Venezuela, is a true Liophis, resembling the L. regina, 
teniurus, and conirostris, but without the transverse markings of 
the first and second, and the peculiar plating of the last. There are numerous 
specimens in the Acad. Mus. It does not appear to be known to European 
herpetologists. 
