PINNA 



Pig. 10. (Mus. (Juming.) 

 The sliL'll here figured is a young specimen of 1'. squa- 

 mosa, in whicli the scales are more produced though 

 preserving the same characteristic promiscuous growth. 

 Chemnitz described and figured it as a distinct species, 

 with the name P. aculeato-squamosa, while Poli con- 

 founded it with the Linnsean P. nobilis. It is an ex- 

 tremely interesting state of the species, and sliould be 

 carefully preserved in collections with the adult form. 



Species 11. (Mus. Cuming.) 

 iLTA. PiiiH. testa pyriforvii-Jlabellatd, radiafim 



longitudinaliter costellatd, costellis ampliter squamalu, 

 squamis reffidaribus, conspicue productis, reciirvis, tu- 

 bulatis ; fttsco-ol'waeed. 



The high Pinna. Shell pyriformly fan-shaped, radi- 

 ately longitudinally ribbed, ribs largely scaled, 

 scales regular, conspicuously produced, recurved, tu- 

 bular; fuscous-olive. 



SowERBY, Pro. Zool. Soc. 1835, p. 84. 



Hab. Bay of Honduras (on sandbanks). 



This fine species is remarkat)le for the conspicuous re- 

 gularity of its large, recurved, tubular scales. 



April, 1858. 



