206 MANUAL OF THE MOLLUSC A, 



? CoNULAEiA, IMiller. 



Btijm. Conuhis, a little cone. Type, C. quadrisulcata, fig. 108. 



Shell four-sided, straight, and tapering, the angles grooved, 

 sides striated transversely, apex partitioned off. 



Fossil, 15 sp. Silnrian — Carb. N. America, Europe, 

 Australia. 



Suh-geniis, Coleoprion, (gracilis) Sandberger; Devonian, 

 Grermany. Shell round, tapering, sides obliquely striated, striae 

 alternating along the dorsal line. 



EuRYBiA, Eang. 1827.t 



Etpn. JEaryhia, a sea-nympli. 



Ex. E. Gaudichaudi, PL XIV. fig. 37. (after Huxley.) 



Animal globular ; fins narrow, truncated and notched at the ends, united 

 ventrally by a small lobe (metapodium) ; mouth with two elongated ten- 

 tacles, behind which are minute eye-peduncles and a two-lobed rudimentary 

 foot {mesopodium) ; body inclosed in a cartilaginous integument, with a j 

 cleft in front, into which the locomotive organs can be retracted. Lingual \ 

 teeth LO.l. ; 



The animal has no proper gill, but Mr. Huxley has observed two ciliated i 

 circles surrounding the body, as in the larva of Pneumodermon. j 



Distr. 3 sp. Atlantic, Pacific. 



Suh-yemis, Psyche, Rang. P. globulosa, PI. XIV. fig. 38. Animal ' | 

 globular, with two simple oval fins. Distr. 1 sp. Off Newfoundland. 



Cymbulia, Peron and Lesueur. 



Etym. Diminutive of cymha, a boat. 



Type, C. proboscidea, PI. XIV. fig. 39. (after Adams). 



Shell cartilaginous, slipper-shaped, pointed in front, truncated posteriorly ; 

 aperture elongated, ventral. 



Animal \\\\h large rounded fins connected ventrally by an elongated 

 lobe; mouth furnished with minute tentacles; lingual teeth 1.1.1; stomach 

 muscular, armed with two sharp plates. 



Distr. 3 sp. Atlantic, Medit. India Ocean. 



TiEDEMANNiA, Chiaje. 



Type, T. Neapolitana, PI. XIV. fig. 40. Named after Pr. Tiedemann. 



Animal naked, transparent, fins united, forming a large rounded disk ; 

 mouth central ; tentacles elongated, connate ; eye-tubercles minute. Larva 

 shell-bearing. Distr. 2 sp. Medit. Australia. 



* Carboniferous limestone, Brit. Belgium. 



t This name had been previously employed for four ditferent genera of plants and 

 animals. 



i 



