LUCINA.— Plate VII. 



seas, so far as the external character of the shell is con- 

 cerned, occurs in certain species of Artemis, which have 

 the same flattened ligament-area, and posterior lateral 

 scales more typically developed. There is, however, no 

 indication of the internal lanceolate triangular sinus of 

 Artemis in the shell under consideration. 



Species 40. (Mus. Cuming.) 

 LuciNA FUNICDLATA. Luc. testd oilongo-quadratd, ieimi- 

 culd, postici anguMo-excavatu, arUice excavatd, lunula 



cordaid minutd profunda imprcssd, concentrice lirh 

 tenuibus fmdculatd ; sordide alba. 



The corded Lucina. Shell oblong-quadi-ate, rather 

 thin, posteriorly angularly excavated, anteriorly 

 slightly excavated and impressed with a small deep 

 cordate lunula, concentrically corded with fine ridges ; 

 dull white. 



Hob. Bay of Honduras ; Dyson. 



Belonging to the same type as L. Jamaicensis of the 

 neighbouring sea. 



