58 



Tellina crassa 



Tellina decussata 



laevigata 



Brasilliana 



linguafelis 



obliqua 



rugosa 



umbonella 



lacunosa 



deltoidalis 



gargadia 



nymphalis 



pristis 



solidula 



multangula 



bimaculata 



polygona 



sexradiata 



capsoides 



ostracea 



TELLINIDES. 



In the French Museum, , 



La Marck gives this as the type of a genus which 

 cannot properly be united to any of its congeners : hav- 

 ing lateral teeth, it differs from the Psammobia; by not 

 having the valves twisted, it is distinguished from the 

 Tellina; the valves also closing, and their interior hav- 

 ing fascial muscular impressions, render it distinct from 

 the Lucina. Shell transverse, inequilateral, a little 

 flattened, slightly gaping at the sides: apices small, not 

 swelled; no irregular plait at the margin. Hinge with 

 two divergent teeth on each valve, two lateral teeth 



