FRESHWATER AND LAND SHELLS. 65 



the extent, in the interior, of the tint of salmon colour.' Beyond this the 

 epidermis is usually of a fine green and rayed, while the umbones and 

 beaks are almost without rays. 



BuLiMUS LACTEus. Plate XXIII. fig. 100. 



Testa ovato-conicd, imperforatd, nitidd, laded, tenui, subdiaphand, minutissimi transver- 

 sim striata, infemh bruneo vittatd ; anfractibus senis ; apertura subparva ; labro acuto. 



Shell ovately conical, imperforate, shining, milky, thin, somewhat transparent, trans- 

 versely and minutely striate, base with a brown band ; whorls six ; aperture rather 

 small ; outer hp acute. 



Hab. about one hundred miles up the Magdalena River, Colombia. 

 T. R. Peale. 



My Cabinet. 



Philadelphia Museum. 



Diam. '4, Length •? of an inch. 



Remarks. — This is one of the new shells brought by Mr Peale from 

 his scientific expedition into Colombia. It may be distinguished by 

 the brown band, which immediately surrounds the base of the columella. 

 One of the individuals under my inspection is more transparent and 

 less white than the other. 



BuLiMus Pealianus. Plate XXIII. fig. 105. 



Testa ovato-conica, imperforata, Icevi, nitidd, cineret, subcrassd; flammulis purpureis lon- 

 gitudinalibus picld ; anfractibus senis ; aperturd patuld, purpurea ; labro acuto, rejlexo. 



Shell ovately conical, imperforate, smooth, shining, ash coloured, rather thick ; fur- 

 nished witii longitudinal purple spots ; whorls six ; aperture widened out, purple ; outer 

 lip acute, reflected. 



Hab. near the Rapids of Angostura, Colombia. T. R. Peale. 



VI. — R 



