114 BUCCINUM. 



whorls aiiparently twisted, in. consequence of the ribs being ob- 

 liquely curved. 



" Yar. 2. LiTTORALis (King). (Fig. 316.) Yentricose ; si)ire 

 shorter, and body-whorl disproportionately large ; longitudinal 

 plaits strong ; throat often cotfee-colored. 



"Yar. 3. paupercula. Dwarf and depauperated. 



'•Yar. 4. striata (Fig, 319). Thinner than usual, with the 

 longitudinal I'ibs nearl}- obliterated. 



"Yar. 5. pelagica (King). Twice the usual size, and also 

 thinner, with a longer spire. 



"Yar. G. Zetlandica (Forbes). (Fig. 364.) Smaller, and of 

 a thin and delicate texture, destitute of longitudinal ribs ; epider- 

 mis smooth and membranous. 



"Monstrosities. 1, ainistrorsum (fig. 321). Spire reversed. 

 2, carinatum. Upper part of each whorl encircled b}^ a keel or 

 more prominent spiral ridge. (B, carinatum, Turton). 3, im- 

 periale. Bod}- -whorl compressed and elongated, so as to give it 

 the shape of a Valuta, (B. imperiale, Reeve, PI. 18, fig. 365). 

 4, acuminatum (fig. 320). Spire -extending to a considerable 

 length; whorls flattened, and the periphery consequently^ angu- 

 l^tcd {B. acuminatum, Brod.). 5, conico-operculatum. Opercu- 

 lum patelliforra or conical. 6, 1>i-opercuIatum and tri-opercula- 

 tum. Having two or three opercula. 



Animal. " Body var3dng in color from dirty white to yellow- 

 ish, speckled or streaked with black ; mantle ratlier thick, folded 

 over the pillar of the shell ; pallial tube extensile, protruded an 

 inch or more beyond the canal, recurved, and obliquely truncated 

 at the extremity ; head small, narrowish ; proboscis very long 

 and powerful, enclosing a muscular sheath, within which lies the 

 tongue ; tentacles flattened, long and pointed, abruptly thickened 

 at the base ; eyes very small, placed nearly one-third of the way 

 up the tentacles ; foot oblong, with shelving sides, capable of 

 considerable expansion and distension, rounded in front, with 

 small ear-shaped corners, and bliintl3'-pointed behind; very large 

 and fleshy, with a short point at the extremity. Odontophore 

 (Pi. 27, fig. 29): central tooth armed with seven cusps or points 



A 



