530 



TECTINACEA. 



bicolor, Chem. 

 bullata, Gmel. 

 incurvata, Chem. 

 lanceolata, Sow. 

 nobilis, Linn. 



Species of Pinna. 



papyracea, Chem. 

 pernula, Chem. 

 rotundata, Linn. 

 rudis, Linn. 



Sub-gen. ateina, Gray. 

 Shell with the apical portions of the valves entire. 



inflata, Chem. 

 muricata, Linn. 

 nigra, Chem. 

 pectinata, Linn. 



saccata, Linn. 

 senticosa, Gould. 

 serrata, Soland. 

 vexillurn, Bom. 



Order PECTINACEA. 



Mantle-leaves free all round, without any separate open- 

 ings for the ingoing current, or the vent. 



Fam. TRIGONIID.E. 



Foot lanceolate, subulate, angulated, formed for leaping. 

 Shell equivalve, pearly within. Hinge composed of a 

 few lamellar teeth interlocking with each other. 



