MITRELLA. 12T 



revolving line, appearing" on the spire-whorls ; onter lip faintly 

 sinuated above, denticnlate within. Length, 13 mill. 



Australia. 



The form is the same as in ('. audrina^ the only difference 



being in the i)osition and width of the colored band. I think 



that they will prove to be identical, and that both are described 



from worn specimens which have lost a more snperficial coloring. 



C. ARANEOSA, Cfonld. 



Shell, form of C.audrina, but reticulated and maculated with 

 fulvous and white; aperture violet-tinted. Length, 10 mill. 



Kagosima Boy and China Coast (Stimpson). 



Not figured. The types were, I suppose, destroyed in the great 

 Chicago fire. 



C. BucciNOiDES, Sowb. PI. 49, fig. 1. 



Shell deep chocolate, nearly black, usually with a row of white 

 spots on the periphery, and sometimes a less conspicuous similar 

 row at the suture ; aperture dark within. Length, 18 mill. 



Pern; under stones at low water (Cuming). 



C. AVENA, Reeve. PI. 49, fig. 2. 



Shell smooth, shining, striated below; reticulated, flamed and 



spotted with orange-chestnut and white ; aperture violet-tinted, 



denticulated within. Length, 13 mill. 



Buffalo, Cape Colony. 

 C. TENUi-^, Gaskoin. PI. 49, fig. 3. 



Shell thin, with acuminated spire and inflated body-whorl, 

 smooth, striated below ; whitish, with bold flames and zigzag 

 lines of orange-brown ; aperture purplish, expanded below; outer 

 lip thin, without teeth, sinuated posteriot'ly. Length, 14 mill. 



Habitat unknown. 

 C. PULLA, Gaskoin. PI. 49, figs. 4-7. 



Shell acuminately oblong, dark chestnut or chocolate-color 

 without and within, columella whitish or sometimes tessellated 

 with chestnut; sometimes the surface is lighter-colored, and then 

 it reveals an obscure reticulated pattern with f^iint spots at the 

 suture and on the periphery ; outer lip without teeth. 



Length, 13 mill. 



Port Jackson, Australia, 



C. nux^ Reeve (fig. 5), appears to be merely a somewhat 

 stouter example of this species. C. badia, Tenison-Woods (fig. 6), 



