66 CONCHOLOGEH (CESTRICA: 
L.. Caperata, SAy. 
L.cuperata, Lymneus_ caperatus, Say, New Harm. 
[W. G. B.] ae 
Fig, 127. Diss. leend2o; 
Shell, elongate-oval, yellowish horn color; 
spire acute, equalling the length of the aper- 
ture; whorls with five equilateral revolving 
lines; suture impressed; aperture rather di- 
Jated: H. 26, W..1o, mill. 
Station, Schuylkill River; common. 
Genus PHYSA, DRAPARNAUD, I80I. 
Animal of Physa.—(W. G. B.} 
Fig, 128, 

Shell, sinistral, oblong, thin, polished; spire acute; 
aperture oval, rounded below, not dilated; inner lip 
formed by a deposit on the last whorl; outer one 
acute. 
Animal, tentacles slender, setaceous ; mantle digitate; 
foot long, posteriorly, acuminate. 
P; ancillaria; Say, Jour. Acad” Phila’ Rass Ne 
1825. 
serra sepnlg Shell, sub-globose, brownish - yellow ; 
Fig.129, | Whorls 4, rapidly attenuated; spire hardly 
elevated above the general curve; aperture 
dilated, but little shorter than the shell; lip 
thickened on its inner margin. H. 16, W. 
TD: maui 
Station, Brandywine Creek, Chester 
County. 
