MOLLUSC A. 25 



but few, and those chiefly around the free upper edge of the mantle; while in some these processes 

 are altogether wanting. 



In Q/prcea erosa (PI. V. Kg. 6) the siphon is of a dirty white colour; the tentacles orange; the eyes 

 black; the mantle brown, covered with small dark spots ; the foot white, with black reticulated markings. 



In Ct/praa caurica (PI. V. Fig. 5) the mantle is light brown, perfectly smooth, and covered with 

 dark brown reticulations ; the foot is brown, with minute white spots ; the peduncle of the eye is of a 

 brilliant white ; the head is brown ; the base of the tentacles dull white ; the tentacles beyond the eyes 

 light brown. 



In Quo^s figure of Cyprma Isabella (Voy. Astrol. t. 48. f. 15) the edge of tbe mantle is simply lobed, 

 and the remainder of the surface naked and void of appendages. In the animal of C. caurica, the edge 

 of the mantle forms a continuous slightly- waved line, and the surface covering the shell is perfectly smooth, 

 with the delicate anastomosing lines mentioned above. A. A. 



'2 



4. ERATO, Risso. 



1. Erato callosa. PI. X. Pig. 32 a, b. Erat. testa pyriformi, crassa, tumida, callosa, spira bre- 

 viuscula, subobtusa, columella escavata, labro conspicue denticulate ; carnea, subtus albicante. 



Hab. China Sea. 



An interesting species of rather large size, distinguished by its callous, thickly-enamelled 

 growth. 



2. COLUMELLATA. 



A considerable number of species of Mitra were collected, but as in the case of the 

 Cones, nearly all had been described and figured in the ' Conchologia Iconica,' chiefly from 

 the researches of Mr. Cuming in the same locality. An important accession was made to 

 the genus Voluta by the discovery of the first recent analogue of a well-known fossil type, 

 abounding in the Eocene portion of the Tertiary beds of the Isle of Wight, dredged at the 

 depth of a hundred and thirty -two fathoms off the Cape of Good Hope ; and some inter- 

 esting species of Marginella were procured, with the animal in a living state, of which 



drawings were made. 



5. VOLUTA, Linnceus. 



1. Voluta abyssicola. PL VII. Kg. 6 a, b, c, d. Vol. testa pyriformi, tenui, spira brevi, sub- 

 turrita, apice acuta, anfractibus superne depresso-canaliculatis, liris numerosis, acutis, longitudinalibus 

 et transversis undique creberrime subprofunde cancellatis, liris superne mucronatis, columella quadriplicata, 

 apertura subangusta, labro tenui; fulvescente-cinerea, fasciis rufo-fuscis angustis tribus vel quatuor 



cingulata. 



Hab. Cape of Good Hope. 



