394 ^®^ MARINE MO(LLUSCA. 



Locality: Type from 80 fathoms 10 miles east of 

 Schouten Island, with two others broken. 



This is a little gem; its curious and elegant form, 

 combined with a glistening whiteness, and the soft violet 

 tints of the spire, render it a most beautiful natural object. 

 It is so widely different from any other shell known to 

 me that its classification is a matter of doubt. It seemed 

 at present best to consider it a Pleurotomid, and I have 

 placed it in Daphnella. It may require a new genus for 

 its reception. 



MITROMORPHA MULTICOSTATA, N.S. (PL. 

 XV., FIG. 21.) 



Shell solid, yellowish: elongate oval of five whorls, 

 including a pointed protoconch of two smooth whorls; 

 spire whorls convex: suture well impressed; base con- 

 tracted; aperture elongate oval, not constricted into a 

 canal; outer lip simple, convex in outline; columella 

 slightly curved; numerous straight rounded axial ribs ex- 

 tend across the whorls, and over about two-thirds of the 

 body whorl there are about 24 on the penultimate; they 

 are separated by deep grooves, which are narrower than 

 the ribs; there is one distinct spiral groove or depression 

 below the suture: numerous faint spirals cross the shell, 

 and are most conspicuous in the grooves; they become 

 much stronger on the base. 



Length, 4.3 m.m.; breadth, 2 m.m. 



Locality: Type from 100 fathoms seven miles east of 

 Cape Pillar, with three others. 



This has a considerable resemblance to M. axicostata 

 Verco, but has more numerous and more closely set and 

 stronger ribs, and far weaker lirae, which latter can 

 scarcely be seen without a lens. 



MITROMORPHA SOLIDA, N.S. (PL. XV., 

 FIG. 22.) 



Shell solid, elongate, whitish, with a few rusty spots 

 below the suture and on the middle of the body whorl; 

 whorls six, rounded, including a smooth two-whorled 

 protoconch; suture distinct: aperture ovate, scarcely con- 



