632 



68. CytheRjEa rosea (pi. cxxxii. f. lObj, Broderip and 

 Sowerbf/, Zool. Journ. vol. iv. p. 48. C. lepida^ Chenu, Conch. 

 Illustr. 



Cyth. testa quam C. Dione magis compressa, purpurea, costis 

 numerosisj rotundis; latere antico laminis prominulis, acutis, 

 raris ; latere postico ad angulum serie una spinarum incipientium. 



Shell much flatter than C. Dione, nearly all rosy -purple, with 

 numerous rounded concentric ribs ; anteriorly with a few promi- 

 nent sharp-edged laminae ; posteriorly with a row of rudimentary 

 spines at the angle. 



Panama. Cuming. 



69. Cyther^a lupinaria (pi. cxxxii. f. Ill), Lesson, Cen- 

 turie Zoologique, pi. 64. p. 196. C. semilamellosa, Chenu, Conch. 

 Illustr. pi. 9. f. 9. 



Cyth. C Dioni simili, sed laminis medio evanidis ; latere pos- 

 tico laevigato ; spinis elongatiusculis. 



Shell larger than C. Bione, with the ribs flatter, and near the 

 angle almost vanishing ; posterior side smooth ; spines long, with 

 purple spots at the base. 



ileal Llejos, Central America. Cuming. 



70. Cyther^ea multispinosa (pi. cxxxii. L112),Sowerd?/,jim. 



Cyth. testa quam C. Dione magis ventricosa; laminis magis 

 elevatis, subsequalibus, ad angulum subtruncatis ; spinis magis 

 numerosis. 



The lamina3 are much elevated and nearly equal, terminating 

 near the spines in an abrupt declivity ; spines more numerous and 

 sharp than in C. Dione. 



Tombez, Peru ; in soft mud, at ten fathoms. Cuming. 



71. Cyther^ea brevispinosa {T^l.cxxni. i.l09),Sowerb9/,jun. 



Cyth. testa alba, C. Dioni simili, sed costis rotundatis ; spinis 

 brevissimis, in serie unica depositis ; antice laminis panels ele- 

 vatis ; margine dorsali prope umbones subretuso. 



Shell white, with the ribs rounded, except at the anterior side, 

 where a few of them are elevated into broad laminae ; one row of 

 spines very short. We have only the specimen figured from Mr. 

 Cuming's collection, from California. 



72. Cyther^a vulnerata (pi. cxxxi. f. 95, 96), Broderip, 

 Pro. Zool. Soc. 1835. p. 46. 



" Cyth. testa subglobosa, lineis concentricis creberrimis Isevibus, 



