MITRELLA. 129 



but upon a comparison of specimens I am not able to arrive at a 

 like conclusion. Mr. Andrew Garrett writes to me that C. Vitiensis, 

 Dunker, has been referred here b}' one of his English corres- 

 pondents. 



C. ZEBRA, Gray. PL 49, figs. 12-14. 



Shell oblong, somewhat pyramidal, either smooth, or the upper 

 part of the body-whorl and spire obscurely tuberculately folded, 

 striate below ; white with zebra-like longitudinal chestnut mark- 

 ings, more or less interrupted or broken up into spots; folds, 

 when present, usually colored ; interior slightly violet-tinted ; 

 outer lip smooth or barely dentate within. Length, 9-13 mill. 

 New Zealand, Japan, Paumotus, Sandwich Islands. 



With this species must be united C. Pacifica, Gask. (fig. 13), 

 and C. miser, Sowb. (fig. 14). There can be no doubt of the 

 extensive distribution indicated above. 



C. DUNKERT, Tryon. PL 49, fig. 15. 



Shell smooth, ovate-conic, sulcate at the base, apex acute ; 

 color variable, rosy or orange, or white, reticulated or undulated, 

 banded or maculated with chestnut; aperture light violet or 

 white, the lip thickened and dentate; operculum purpuroid. 



Length, 7-13 mill. Japan. 



Very variable in both coloring and form, and referred by 

 Dunker, who described it under the name of varians, to the genus 

 Amycla. As I do not recognize the generic distinctness of 

 Amycla, I am compelled to change the name that of varians 

 having been used for a Columbella, many years earlier, by 

 Sowerby. 



C. BURCHARDI, Dunker. PL 49, fig. 17. 



Shell smooth, with fine revolving striae, becoming more dis- 

 tinct towards the base; lip thickened, slightly sulcate within, 

 externally sub varicose ; white, undulated or irregularly maculated 



with chestnut. Length, 15-18 mill. 



Japan. 

 C. HANLEYI, Desh. PL 49, fig. 16. 



Shell small, ovate-conic, smooth ; white variegated and 

 marbled with chestnut ; aperture white within ; lip thickened 



and quadridentate within. Length, 9 mill. 



I. Bourbon. 



