206 MANUAL OF THE MOLLUSC A. 



? CONULARIA, Miller. 



Etym. Conulus, 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. Silurian Garb. N. America, Europe, 

 Australia. 



Sub-genus, Coleoprion (gracilis) Sandberger; Devonian? 

 Germany. Shell round, tapering, sides obliquely striated, striee 

 alternating along the dorsal line. 



EURYBIA, Rang. 1827.f 



Etym. Eurybia, a sea-nymph. Fig. 108.* 



Ex. E. Gaudichaudi, PI. XIV. fig. 3?. (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 

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

 teeth 1.0.1. 



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

 circles surrounding the body, as in the larva of Pueumodermon. 



Distr. 3 sp. Atlantic, Pacific. 



Sub-genus, 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 cymba, a boat. 



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



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

 aperture elongated, ventral. 



Animal with 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. 



lann. 

 d disk; 



TIEDEMANNIA, Chiaje. 



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



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

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

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



* Carboniferous limestone, Brit. Belgium, 

 t This name had been previously employed for four different genera of plants an 

 animals. 



