632 



68. CythertEa rosea (pi. cxxxii. f. 108 j, Broderip and 

 Sowerby, Zool. Journ. vol. iv. p. 48. C. lepida, Chenu, Conch. 

 Illustr. 



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

 numerosis, 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 lamina? ; 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 simdi, sed laminis medio evanidis ; latere pos- 

 tico lsevigato ; spinis elongatiusculis. 



Shell larger than C. Dione, with the ribs natter, and near the 

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

 purple spots at the base. 



Real Llejos, Central America. Cuming. 



70. Cyther^a multispinosa (pl.cxxxii. i.\VZ>), Sowerby, jwn. 



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

 elevatis, subEequalibus, ad angulum subtruncatis ; spinis magis 

 numerosis. 



The lamina? 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. CytherjEA brevispinosa (pl.cxxxii. f. 109), Sowerby, jun. 



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

 brevissimis, in serie unica depositis ; antice laminis paucis 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 lamina? ; one row of 

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

 Cuming's collection, from California. 



72. CytheRjEA vulnerata (pi. cxxxi. f. 95, 96), Broderip, 

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



" Cyth. testa subglobosa, lineis concentricis creberrimis lsevibus, 



