CYPR^AMG. 127 



TRIBE II. SIPHONOSTOMATA. 



Shell spiral ; aperture notched or produced into 

 a canal in front ; operculum horny, plaited. Animal 

 furnished with a retractile proboscis ; eye-stalks 

 united to the tentacles ; margin of the mantle pro- 

 duced into a breathing-siphon ; gills comb-like, 

 placed obliquely across the back. 



Spire concealed Cypraada. 



Spire manifest : 



Outer lip notched behind . . Conidte. 

 Outer lip entire behind : 



Lip notched in front 



Lip produced into a canal . 



FAMILY I. 



Shell rolled as a scroll, covered with a porcelain- 

 like enamel ; spire concealed ; aperture narrow, 

 long, channelled before and behind ; outer lip (in 

 adult age) thickened, and turned in. Animal with 

 a broad foot ; mantle with wide side-lobes, which 

 turn up over the shell. 



Cyprcea (Linn.). Cowry. Shell swollen ; outer 

 and inner lip wrinkled transversely. 



C. Europsea. Tig. 200 ; n. s. 

 moneta.* 



Ovulum (Lamk.). Poached Egg. Inner lip smooth. 



O. acuminatum. 



patulum. Fig. 199 ; n. s. 



* Taken alive in Cornwall by Mr. Peach. (See Rep. Brit. 

 Assoc.; 1844.) 



