MITRELLA. 135 



C. JAPix, Duclos. PI. 50, fig. 3S. 



Shell light yellowish brown, with two moderately hvoad bands 

 of reticulated chestnut lines, the upper one reappearing on the 

 spire-whorls. Length, 6 mill. Habitat unknown. 



C. AURANTIACA, Dall. PI. 50, fig. 39. 



Minute, fusiform, smooth, with five slightl}- rounded Avhorls ; 

 generally orange-yellow, semitranslucent and without markings, 

 but occasionally darker, or with zigzag brown lines leaving a 

 light central band and light sutural maculations ; outer lip 

 slightly sinuated, hardly striate within. L. -18 in.; lat. -08 in. 

 Monterey, Cal., Todas Sa?itos Bay, L. Cul. 



C. TUBEROSA, Carpenter. PI. 50, figs. 40, 41. 



Shell smooth, whorls six, rather flat, the body-whorl having 

 an obtusel}^ angulated periphery; nucleus white and smooth, 

 flat on the top, not swollen. Length, 7-8 mill. 



Sta. Barbara, San Diego, etc., Gal'fornia. 



Larger than the preceding species, and angulated ; the nucleus 

 also diflTers, that of C. auraniiaca being regularly fusiform. The 

 coloring is very variable, varying from white to dark chocolate, 

 either uniform or with a light central band and sutural macu- 

 lations, and sometimes with nebulous or zigzag markings. 



Var. VARiEGATA, Stearns. Fig. 41. 



Shell usually somewhat more slim than the ty\>Q, and with 

 consequently less angulation of the periphery; the central light 

 baud is more or less broken up into white spots, smaller than 

 the sutural maculations. 



C. CHRYSALLOiDEA, Carpentci'. PI. 50, fig. 42. 



Shell cylindrically oblong, shining, whorls seven, slightly 

 rounded, covered with microscopic spiral lines ; 3'ellowish to 

 chocolate ; lip scarcely thickened and ver^^ slightly dentate 

 within. Length, 8 mill. Southern Coast of California. 



C. Babbi, Tryon. PI. 50, fig. 43. 



Shell ovate or oblong-cylindrical, thin, transparent, shining, 

 very faintly tinged and flamed with orange, apex pink; aperture 

 short, lip rather thickened, notched at the ui)per part, scarcely 

 denticulated. Length, 10 mill. 



Gvlfof California (Mr. Babb, R, 



LIBRA' 





