THE NAUTILUS. 91 



last whorl and aperture. Moreover, the apex, in all the specimens 

 seen, is perfect, while P. minuta is almost invariably eroded above, 

 several whorls being lost from the tip in adult specimens. 



CARYCHIUM NANNODES N. SP. 



BY GEO. H. CLAPP. 



In shape this species (Plate III, figs. 7, 8, 9) resembles C. exile, 

 being long and slender, but differs in being absolutely smooth, with- 

 out any trace of growth lines, even when magnified 60 diameters ; 

 under high magnification the surface shows a faint granulation ; 

 color waxy-white, transparent, the columella!' fold showing distinctly 

 through the shell ; whorls about 4-^, regularly tapering from the body- 

 whorl to the apex ; sutures deep, whorls slightly shouldered ; lip 

 wide and well reflected especially at the columella where it forms a 

 distinct umbilical chink, outer curve of lip decidedly flattened, 

 hardly thickened within ; viewed from the back the lip is more 

 squared below than in exile and exiguum ; upper columella!' fold of 

 good size, lower one almost obsolete. 



Length 1.4, diameter 0.5 mm. 



Collected by Herbert H. Smith on Monte Sano, about 5 miles 

 east of Huntsville, Ala. "Abundant among leaves in a shady ditch 

 in damp forest near the top." (H. H. S.) Altitude about 1600 ft. 



Types No. 5401 of my collection and cotypes in collections of 

 Acad. Nat. Sci., Bryant Walker and T. H. Aldrich. 



This is a most distinct species, as its size alone at once separates 

 it from all of the other American representatives of the genus. 



With this species Mr. Smith also found some C. exile, which agree 

 with the northern shells, except that they are more coarsely ribbed. 

 They are beautiful shells under the microscope. 



IS C0CHLI0PA EOWELLI A CALIFORNIAN SHELL 1 



HY H. A. l'lI.SI'.KV. 



Cochliopa rowelli is a small, solid umbilicate snail, somewhat heli- 

 ciform or Yalva to-shaped, and with an operculum like Fluminicola 

 or Amnicola. It was described by Tryon from specimens received 



