196 BUCCINOP.SJS. 



B. DALEI, Sowb. PL 79^ figs. 381, 388 ; PL 77, figs. 355, 356. 



Shell egg-shaped, with a truncated base, moderately solid, 

 semitransparent, somewhat glossy ; sculpture numerous very 

 slight and delicate spiral striae, and still more close-set lines ot 

 growth ; these marks are only discernible with a magnifying 

 power, the surface appearing smooth to the naked eye ; color 

 ivory-white ; epidermis extremely thin, pale yellowish white, 

 with a faint tinge of brown. Length 1-15 in., diam. 1 in. 



Animal, body pale yellowish-white, with a faint tinge of flesh 

 color. Egg-cases sometimes deposited on the under side of the 

 maternal shell. 



Ireland and Scotland, Norway, Behring's Straits, Sea of Ochotsk. 



Dredged 40 to 160 fathoms. Fossil in the Red and Coralline 

 Crag, and Antwerp Crag. A specimen from the latter deposit, 

 in the Brussels Museum, measures 3*75 ins. long by 1*7> ins. 

 in diam. Among the synonyms may be mentioned B. ovoides, 

 Middendorff (fig. 355), and B. ovum, Turton (fig. 388). 



Yar. EBURNEA, Sars. Fig. 356. 



Shell smaller and thinner, with the spire more produced. 



B. NUX, Ball. 



Short, very solid, smooth, except for microscopic revolving 

 striae, with an ivory-like surface, which in. young living speci- 

 mens is covered with a beautifully reticulated, short, velvety 

 epidermis, of a brownish color. The adult shell is white or with 

 a band of livid purple. Suture distinct ; spire very short ; 

 whorls five, last very much the largest, A^ery rotund. Outer lip 

 thickened, smooth, projecting beyond the columella, whose 

 anterior edge is smoothly and widely twisted, so that a glimpse 

 can be had of the interior axis. Column thickened, short, some- 

 what arcuated, with no fasciole. 



Length 1*28 inches, width -8 inch. 



Aleutian Islands; 10 fathoms, rocky bottom. 



Differs from B. Dalei in the epidermis, which, in the latter, is 

 smooth and polished, and in the solidity of the shell. I do not 

 know the species. 



