xxii SYSTEMATIC INDEX. 



Fam. Coniidoc. 



CONUS. Generali.6. Cone. 



Fam. Cyprseidffl. 



ARICIA. Moneta, Money Cowry. 



Fam. Buccinidai. 



BUCCINUM. Undatum, Whelk. 



Fam. Muricidse. 



MUREX. Tri.bu.lus, Thorny Woodcock. 



Order CYCLOBRANCHIATA. 



Fam. Patellidre. 



PATELLA. Vulgata, Limpet. 







Order CONCHIFERA. 



Fain. Pectinidaa. 



PECTEX. Jacobseus, Scallop. 

 OSTREA. Edulis, Oyster. 



Fam. Meleagrinidse. 



MELEAGRINA. Margaratifera, Pearl Oyster. 



Fam. Mytilidse. 



MYTILUS. Edulis, Edible Mussel. 



Order CIRRHOPODA. 



PENTALASMIS. Anatifera, Bernicle. 



Class VII. CRUSTACEA. 

 Sub-class I. MALACOSTRACA. 

 Order I. DECAPOD A. 



Sub-order I. DECAPODA-BRACHYURA. 



Fam. I. Canceridre. 



CANCER. Pagurus, Crab. 



Sub-order II. DECAPODA-ANOMOURA. 



Fam. III. Paguridre. 



PAGURUS. Bernhardus, Hermit Crab. 



Sub-order III. DECAPODA-MACROURA. 



Fam. V. Astacidse. 



POTAMOBIUS. Astacus, Cray-fish. 

 ASTACUS. Gammarus, Lobster. 



Fam. VI. Crangomdae. 



CRANGOX. Vulgaris, Shrimp. 



Fam. VIII. Palsemonldce. 



PAL^EMOX. SerrRtus, Prawn. 



