140 MITRELLA. 



C. L^TA, Brazier. 



Shell ovate, smooth, acuminated at both ends, fulvous; whorls 

 six, spirally angled, slightly convex, transparent white at the 

 angle, marbled above and below with dark fulvous lines, some- 

 times flexuously waved ; spire short, apex white, rounded ; aper- 

 ture narrow, little more than half the whole length, canal narrow, 

 slightly recurved, columella smooth, curved, grooved in the 

 middle, inner part forming a sharp lip below upper p'<rt, with 

 thin deposit of callus, varicose below on the outside, peristome 

 white, thin at edge, gibbous in the middle. L. 4, diam. 1*5 mill. 

 Darnley IsL, Torres Sts. With the preceding species. 



Unfigured. 



C. FORMOSA, Gaskoin. PI. 51, fig. 54. 



Shell ovate, smooth, shining, pale pink, encircled round the 

 middle, and again near the base with faint bands of chestnut 

 network; whorls flatly convex; aperture rather small, columella 



excavated, lip simple. Length, 10 mill. 



Habitat unknown. 



C. NUBECULATA, Rccve. PL 51, fig. 55. 



Shell oblong, ovate, smooth, yellowish white, variously mottled 

 with orange-brown ; apex violet-tinted, whorls convex; aperture 

 small, lip notched at the upper part, prominently toothed within. 



Habitat unknown. 



Kather obscurely clouded in respect of coloring, which inclines 

 towards the base to form a fine network. — Reeve. 



C. BiFLAMMATA, Reeve. PI. 51, figs. 56, 57. 



Shell cylindrically ovate, smooth, shining, whitish, densely 

 flamed throughout with orange-brown, spire rather obtuse, whorls 

 convex ; aperture small, columella slightly excavated, lip vari- 

 cose, fiiintly notched at the upper part, denticulated within. 



Habitat unknown. 



Encircled with two bands of longitudinal orange-brown flames, 

 quite peculiar and uniform in character. — Reeve. 



C. YoRKENSis, Crosse. PL 51, fig. 58. 



Shell oblong, acuminated, smooth, striate at base ; white, with 

 some pale red longitudinal stripes, under a greenish yellow 

 epidermis ; whorls nine, nearly flat ; aperture oblong, slightly 



