SOUTH AFRICAN" MARINE MOLLUSKS. 39 



appear equal and equally spaced, the anterior one forming the anterior 

 limit of the columella. Outer lip slightly pinched in and drawn for- 

 ward a little posterior to the middle. Aperture increasing steadily in 

 width from the posterior angle anteriorly. 



The type, Cat. No. 149, U.S.N.M., collected by William Stimpson 

 on the North Pacific Exploring Expedition at Simons Bay, meas- 

 ures: Length, 10 mm.; diameter, 4.6 mm. 



MARGINELLA NEGLECTA Sowerby. 

 Plate 1, fig. 7. 



Four lots of this species are in the collection of the United States 

 National Museum. Cat. No. 241006, one specimen from Simons Bay, 

 Cape of Good Hope. Three additional lots are in the United States 

 National Museum, from Port Alfred. One, Cat. No. 250333 (Coll. 

 No. 1206). Two specimens, Cat. No. 250332 (Coll. No. 1205), and one 

 specimen, Cat. No. 186714a (Coll. No. 73). 



MARGINELLA TURTONI, new species. 

 Plate 1, fig. 3. 



Shell vitreous, translucent, pale yellow with a narrow, pale orange 

 brown band forming a girdle about the middle of the shell. Spire 

 completely covered by the posterior edge of the outer lip, which 

 forms the highest point in all the turns. Left margin of the last 

 whorl slightly rounded in the middle, tapering gently toward the 

 base, rounding abruptly toward the summit. Right margin straight 

 in the middle, curving a little more gently toward the spire than 

 the base. Aperture narrow, extending to the middle of the spire; 

 outer lip moderately strong, slightly inbent in the middle; parietal 

 wall glazed with a thin callus, provided with four, equal and equally 

 sloping, oblique folds on the columella, the anterior of which coin- 

 cides with the basal margin of the columella. 



The type and three specimens, Cat. No. 186718, U.S.N.M., come 

 from Port Alfred (Coll. No. 77) . The type measures : Length, 8.5 mm. ; 

 diameter, 4.0 mm. 



MARGINELLA CLEO, new species. 

 Plate 1, fig. 6. 



Shell elongate-ovate, semitranslucent, vitreous, bluish white. 

 Spire short, broadly conic, whorls not separated by distinct sutures. 

 Left margin of the shell gently rounded; aperture narrow; outer lip 

 inbent in the middle ; parietal wall covered by a thin callus ; columella 

 provided with four oblique folds, of which the anterior, which bounds 

 the basal edge, is the strongest. 



