106 COLUMBELLA. 



C. LABiosA, Sowb. ri. 43, figs. 22, 23. 



Epidermis very thin, smooth, translucent, olivaceous ; under 

 ■which the shell is ash-color, with numerous narrow chestnut 

 revolving lines; lip and columella white, the lip with plate-like 

 expansion internall3\ Length, '8-1 inch. 



St. Elena, W- Columbia (Cuming). 



G. venilia, Dnclos (fig. 23), is a'synonj-m. 



C. m^iMASTOMA, Sowb. PI. 43, fig. 24. 



Shaded chestnut and chocolate-color, witli white blotches 

 which are usually arranged as broad zigzag markings on the 

 shoulder, and similar ones at the base of the body-whorl, the 

 latter often coalescing to cover the entire basal portion of the 

 shell ; aperture orange-color. Length, 1 inch. 



Galapagos Is.; Panama to Oulf of Califor)da. 



C. FESTiVA, Kiener. PI. 43, fig. 25. 



Shell smooth; white around the sutures, then spotted and 



streaked longitudinally with white and chocolate ; aperture white. 



Length, 9 mill. 



Acapulco to Gape St. Lucas, L. California. 



C. PHASiNOLA, Duclos. PI. 43, fig. 20. 



Shell with revolving rounded ribs, often decussated by longi- 

 tudinal sculpture, so as to become tuberculated ; chestnut-l)rowu, 

 the tubercles whitish; lips orange. Length, 10 mill. 

 ,u . Habitat unknown. 



^'' C. MERCATORiA, Limi. PL 43, figs. 28-33. 



Shell with small rounded revolving ribs, separated by narrow 

 grooves; sometimes iniicolored, pink or yelloAvish, usually' longi- 

 tudinally maculated with orange or chocolate and white, and 

 with or without chocolate articulations forming one or two bands ; 

 aperture white or slightly yellowish. Length, -C-'S inch. 



West Indies, Florida. 



A common species, very variable in painting, but pretty con- 

 stant in form and sculpture; it occurs on sand}^ bottoms in from 

 two to four feet water. The synonyms are numerous, including 

 a large, coarsely ribbed form, called by Sowerby G. rudis (fig. 

 31). Reeve has figured this form under the name of G. Peleei, 

 Kiener, and has given for locality the Philippine Islands — 

 undoubtedly an error. The true C. Peleei, Kiener (tig. 32), is, on 



