104 ANALYTICAL INDEX. 



CHAPTER U.— continued. 



Of the Liraax species, . . . page 34 



The shell of these animals in general conical, . 35 



Vain to account for diversities, . . . ib. 



PiLEOPSIS HUNGARICA, .... ib. 



Shell nearly circular, &c., . . . . ib. 



Tentacula originate from the head, . . ib. 



Velutina laevigata, . . . . ib. 



Doubtful whether in a state of transition, . ib. 



Shell and animal described, . . . .36 



Cypr^a Europea, .... ib. 



Shell common, but animal not understood, . . ib. 



Living animal rare, .... ib. 



Shell described, . . . . . ib. 



Description of animal, .... ib. 



Food uncertain, . . . . .37 



Plate VII. described, .... 33-36 



Natica alderi, ..... ib. 



Size and colour of the shell, . . . . ib. 



Animal, of the nature of a Limax, described, . ib. 

 Food, &c., ...... 38 



Plate V. described, .... ib. 



TROCHUS, ib. 



Shell more conical than that of the Turbo, . . ib. 



1. Trochus cinerarius, .... ib. 



One of the more ornamental of the Scotish shells, . ib. 



Shell and animal described, ... ib. 



Feeds on the CoralUna officinalis, . . .39 



'J. Trochus zizyphinus, .... ib. 



Shell and animal described, . . . . ib. 



Feeds on Zoophytes, .... ib. 



Plate VIII. described, . . . 39,40,41 



TURBO, 40 



Comprehends numerous species, ... ib. 



TuRPO quadrifasciatus, . . . . ib. 



Shell and animal described, ... ib. 



