44 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



MITRA IMA, new species, 



Plate 21, fig. 4. 



Shell small, cylindro-conic, pale brown, variegated with whitish 

 spots and spots of rust color. Nuclear whorls decollated, the succeed- 

 ing turns well rounded, slightly shouldered at the summit, crossed 

 by obsolete axial ribs, of which 12 occur upon the first to third and 14 

 upon the penultimate whorl. Sutures well marked. Periphery of 

 the last whorl well rounded. Base prolonged, well rounded, free of 

 all sculpture. Aperture channeled anteriorly; posterior angle acute; 

 outer lip moderately thick; columella provided with four oblique 

 folds, of which the posterior is the strongest, the others decreasing in 

 size consecutively; parietal wall covered with a moderately thick 

 callus. The color markings consist of a light brown ground color, 

 each whorl of the spire being marked with two interrupted bands of 

 white, the first of which is on the middle of the whorl, and the second 

 immediately posterior to the suture. The white areas are on the 

 middle of the ribs and each white area is bounded on all sides with a 

 rust-colored edging in the middle subsutural band. This rust color is 

 absent at the posterior margin, while the ground color of the whole 

 base is made up of this tint. The base, in addition, is marked with 

 four interrupted bands of unequal width and unequal spacing of 

 whitish spots. 



The type, Cat. No. 250346, U.S.N.M., comes from Port Alfred (Coll. 

 No. 1219). It has four postnuclear whorls, and measures: Length, 

 9 mm.; diameter, 4 mm. 



MITRA EUZONATA Sowerby. 



Cat. No. 186735, U.S.N.M., two specimens from Port Alfred (Coll. 

 No. 94). 



MITRA KOWIENSIS Sowerby. 



Cat. No. 186737, U.S.N.M., five specimens from Port Alfred (Coll. 

 No. 96). 



Cat. No. 272155, U.S.N.M., two from Kowie, South Africa. 



MITRA LATRUNCULARIA Reeve. 



Cat. No. 98011, U.S.N.M., six specimens from Albany, South Africa. 

 Cat. No. 186730, U.S.N.M., one from Port Alfred (Coll. No. 89). 



MITRA CARIFA, new species. 



Shell rather large, elongate-ovate, brown, excepting two spiral 

 cords that form the anterior half of the whorls between the sutures, 

 which are yellow. Nuclear whorls decollated. Postnuclear whorls 

 narrowly, roundly shouldered at the summit, the rest marked by 

 four strong, broad, flattened, spiral cords between the sutures, which 



