CONCHYLIA— DiT/IIiiJ. 47. 217 



47. LIMA— DRUG UIE RE. 



Testa longitudinaliter oblunga, requifnlris, iiifequilateralis, basi 

 transversim auricnlald, nmhonibus remotiusculis. Cardo 

 edentulus, foced externa et disscpimento transversa sub nm- 

 bones. Ligamentum externum. 



Shell longitudinally oblong, equivalve, inequilateral, with auricles 

 at the base, and the beaks ratiier remote, ilinge without teeth, 

 with an external cavity and a transverse dissepiment under the 

 beaks. Ligament external. 



The ciiaracter of this genus sufficiently distinguishes it both 

 from the Ostrea and the Pecten. From the first it differs in beinsr 

 furnished with small auricles at the sides of the hinge ; from the 

 latter in having the beaks distant, between which the ligament 

 is placed externally, as in the Pectunculus, and separated from 

 the interior of the valve by a strong transverse parietal disse- 

 piment, and from both in its general outline, wiiich is longitudi- 

 nally oblong, with one of the sides nearly straight, and the oppo- 

 site one produced in an arcuated manner, not unlike the common 

 Mussel. 



All of them are thin, transparent, white colorless and without 

 gloss, generally free, but occasionally fixed to the Flustra and 

 the Alcyonium. 



Lima testa tumidd, striis numerosis longitudinalibus subundatis buiiata. 



miuorihusque interpositis, auricuh's obliquis. 

 Shell tumid, with numerous longitudinal somewhat undulate 



striae and lesser ones between them, and the auricles oblique. 



2f 



