CHiETOPLEURA. 



475 



Species of Chiton. 



aculeatus, Li^in. 

 acutirostratus, Adams and 



Reeve. 

 brevispinosus, Son:. 

 cselatus, Reeve. 

 Califoniicus, Nutt. 

 Columbiensis, Soiv. 

 Cunningbami, Reeve. 

 fortiliratus, Reeve. 

 Fremblii, Brod. 

 gigas, Chem. 

 labeculatus, Reeve. 

 linter, Chem. 

 luridus, Soiv. 

 Magellanicus, Chem. 

 magnificus, Grai/. 



micans, Gould. 

 mucrouulatus, Shiittl. 

 muscosus, Gould. 

 Owenii, Gray. 

 piceolus, Shuttl. 

 piceus, Gmel. 

 Polii, Phil. 

 pulcberrimus, Sow. 

 salamander, Spengl. 

 scaber, Reeve. 

 scabriculus, Sow. 

 SoAverbiauus, Reeve. 

 spiniger, Soiv. 

 spinosus, Bruff. 

 spinulosus, Gray. 

 tuberculiferus, Sow. 



Genus CHiETOPLEURA, Shuttle worth. 



Mantle beset with horny bristles. 



Shell with the valves external, broad, transverse; the 

 hinder valve with the apex sub-central. 



Si/n. Eudoxochiton, Sliutllew. Craspedochiton, 

 SJiuHleiv. 



Ex. C. Peruviana, Lamarck, pi. 54, fig. 2. 



In this genus the laminae of insertion of the hinder 

 valve are many-lobed, those of the middle valves bi-lobed, 

 or six-lobed, but the obvious feature of distinction con- 

 sists in the mantle-margin being covered with hairs or 

 horny bristles, instead of with calcareous spines. 



