MITRELLA. 127 



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

 sinuated above, denticulate within. Length, 13 mill. 



Australia. 



The form is the same as in C. austrina, the only difference 

 being in the position 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 superficial coloring. 



C. ARANEOSA, Gould. 



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

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



Kagosima B<iy 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. 



Peru; 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. TENUK, 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 posteriorly. Length, 14 mill. 



Habitat unknown. 

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



Shell acuminately oblong, dark chestnut or chocolate-color 

 without and within, colurnella whitish or sometimes tessellated 

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

 it reveals an obscure reticulated pattern with faint 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), 



