CONCGCHOLOG LA (CESTRITEA. 21 
Station, under logs, and decayed wood, near Philadel- 
phia. (Tryon.) 
Lingual Dentition of P. dorsalis. — | Morse. ] 
Fig. 6. 

Family LIMACIDE. 
Shell small, flat, rudimentary, and concealed within 
the mantle; which only covers the upper portion of the 
animal. 
DIAGRAM OF THE GENERA, AND SPECIES, OF THE FAMILY 
LIMACID#., 
SPECIES. 
FamMILy. ( GENUs. | flavus, 
< 4 agrestis, 
LIMACID#. (LIMAX. campestris, 
maximus. 
Genus LIMAX, Linvn., 1740. 
Animal, more or less elongated, tapering, acute, man- 
tle occupying the anterior part of the body, wrinkled ; 
respiratory orifice in the lower edge of the mantle. 
Shell very small, and entirely concealed. 
L. flavus, Linn., Syst. Nat., Ed. x., i., 1758. 
Lima flavus, —[B. & B.] 

