ANALYTICAL INDEX. 1 " 



CHAITKK III.- 



VmmcAtnu, . ... 



Rawly fond alira, ib. 



Living specimen, ...... ib. 



7. MTA ITUATA (M. tnmeala), .... 7j 



Shell and animal described, ..... il>. 



Animal quiescent, ...... ib. 



Plate XIV. described, .... 70,71,72 



8. PBOLA* CXUFATA, . . . . . ib. 



rkolat erupata and P. dartylut frequent in the Scotiih sea*, il>. 



Inhabit bed* of indurated clay, . . . 73 



Length and form of the shell, .... ib. 



Animal of asridian nature, . . . . . il>. 



Colour, ....... ib. 



Inactive in captivity, . . . . . ib. 



Matt be quiescent in iff natural Mate, ... ib. 



Plate* XV. XVI. explained, 74 



9. PECTEW Tlte Scailop, .... ib. 



A numerous genii*, ...... ib. 



Nature of the Tethy* little understood, . . . ib. 



Shells of all flattened, thin and light, ... ib. 



PECTEN OPCKCCLABU, ...... ib. 



Description of (hell and animal, .... ib. 



One of the mo*t restleM of the Pecten, ... 75 



When quiencent the scallop open*, displaying iu beautiful part*, ib. 



PECTEN OMOLKTU* (P. tigrimu), .... ib. 



One of the malle*t of the genus, . . . ib. 



Description of the shell and animal, . * . il>. 

 Spring* with great fore- through the water, . . .76 



Specimen survived four month*, .... ib. 



10. PCCTCNCCLOT PILOCCS (P. ylyeimeriij, . . . ib. 



Shell and animal described, ..... ib. 

 Plate XVII. described, . . 75,76 



SOLEX IILIQCA Bazar Sktll, . .... 77 



Seven specimen* on the 19th July 1844, ib. 



The whole about five inches long, ib. 



Shell described, ...... ib. 



