ANALYTICAL INDEX. '-'7'.' 



CHAPTER III. cMAwirdL 



Reproduction of the shell, FACE 182 



Numerous young burst their capsules, . . . .186 



ExBTiation sometimes rery swUnly, ... 187 



Chief braiding saasons, April and May, ib. 



This species somewhat rare, .... 188 



Plafcs X I.I II., XLIV., explained, ib. 



5. CAXCU (PIXNOTBERES) VETERCM, ... 189 



One of the mallrr animals inhabiting the Beotish seas, . ib. 



Asaoeiates with the MytUrn moMAa, ... ib. 



Dr Leach, Mr W. Thompson, and Mr T. V. Thompson, . ib. 



Enters some biralre shell and dwells in peace with the owner, 190 



SIM, appearance, and organs, . . . . ib. 



Propagation of young, ..... ib. 



Plate XLV. explained, , . . 191 



(1.) CANCER (FORCELLAXA) LONGICORMS, Tke Ventilating Crab, ib. 



Smallest of the Scotish crabs, . . . ib. 



Its form, organs, Ac^ ..... ib. 



Extraordinary derelopment, the pfdipalpi, . . 1 92 



This species very tranquil, .... ib. 

 Food, perpetuation, Ac., ..... ib. 



Plate XLV. explained, .... ib. 



$ (2.) CANCER (PORCELLAXA) FLATYCHELES, Rougk-footfd Crab, . 192 



Form, organs, food, Ac., .... ib. 



None of the specimens erer fed, ... ib. 



Plate XLV. explained, . ib. 



C . CAXCU (CORYSTES) CASSITELAUKUS, . ib. 



Form, Ac^ described, . . . ib. 



Dwells in deep water, and rarely seen, ib. 

 Plate XLVI. explained, . 



General remarks on Crustaceans . . 194 



I). 1. CAXCU (IXACBCS) DoRSETTExaia, ib. 



Form so marked as not to require description, ib. 



Specimens dwell together in peace, 'b. 



I). 2. HYAS ARAXEOS, 



Dr Leach two British species, tiytm anmttu sad Hfat eosrctJBii, ib. 



