72 PROCEEDINGS OF THE ACADEMY OF 



about one-third of the length of the shell, within white ; lip curved forward 

 and forming a very conspicuous, subacute tip near its base ; columella well 

 rounded, a thick callous deposit covering the umbilicus. 



Length 2 inches ; breadth lj inches. 



Hub. Illinois. My Cab. ; Cab. Hugh Cuming, London. 



Obs. This is the most ponderous species in the genus, far exceeding P. 

 ponderosa, Say, in that respect ; compared with that species it is not only 

 much more solid and heavy, but its spire is proportionally more elongate, 

 whorls more convex, while the body whorl is less ventricose, and the aperture 

 is uncommonly small for a Paludina of its size ; the body whorl is disposed to 

 be angulated near its middle ; all the whorls are more or less shouldered and 

 the lines of growth are very conspicuous ; the body whorl is obscurely striate 

 concentrically, and its surface then- by modified so as to present* a faintly sculp- 

 tured appearance, and the striae being somewhat finely undulated the appear- 

 ance under a microscope is very pleasing. 



Supplement to " A Catalogue of the Venomous Serpents in the Museum of the 



Academy," etc. 



BY E. D. COPE. 



Species 19. Teleuraspis Castelnaui Cope. Another specimen, obtained 

 in a collection made between Fort Riley and Pike's Peak, Kansas, with Scelo- 

 porus undulatus, Ablabes occipitalis, Bascanion flaviventris, 

 etc. As the same collection, however, contained a specimen of Liophis 

 r e g i n as , the occurrence of the South American serpent in question was 

 doubtless the result of accident or mistake. 



P. 345. After Elaps altirostris insert 



64. E. Hemprichii Jan, Rev. et Mag. de Zoologie, 1858, p. 524. 

 One spec. Surinam. Dr. Colhoun. 



Our specimen differs from those described by Prof. Jan with respect to the 

 number of gastrosteges included in the black rings. In those the central ring 

 covers but one plate ; in ours, four, the lateral ones six or seven. The great 

 breadth of these rings compared with the light spaces, distinguishes it at once 

 from any other species which we have seen. The muzzle is short, and the 

 nostrils widely separated. Total length 11 inches. Gastrosteges 181, anal 1, 

 urosteges 27. 



P. 346, species 51. A more careful examination of the two specimens here 

 assigned, with a mark of doubt, to Elaps Marcgravii, has convinced us 

 that neither of them belong to that species, and that they are in fact distinct 

 from each other. The smaller we believe to be undescribed. After fili- 

 form i s Gthr. it is the most slender South American Elaps. Upon comparing 

 it with a young E. lemniscatus, which has a head of the same size, the 

 proportions of the body and tail are nearly similar, but the number of sets of 

 rings is rather less. The head is not so broad posteriorly, and the occipital 

 plates are a little more elongate. The principal difference, however, lies in the 

 distribution of colors on the head. This is entirely black above and below as 

 far as three scales behind the occipitals, except a yellow band behind the post- 

 oculars. This covers the sixth upper labial, one temj>oral above it, anterior 

 third of the occipitals, hinder edge of superciliaries, and greater part of the 

 vertical. Superior labials seven, third and fourth coming into the orbit. 

 Distance from the black of the head to first ring, eleven scales. Eight sets of 

 rings, the middle not twice as wide as the external ring, which is as broad as 

 the yellow interval. Gastrosteges 197 ; anal 1 ; urosteges 19 pair. Length 11 

 in. 9 1. 



We propose calling this species Elaps melanogenys. 



One specimen, presented by Dr. Wilson ; locality unknown. 



[Feb. 



