116 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



The type, Cat. No. 250397, U.S.N.M., comes from Port Alfred 

 (Coll. No. 1270). It has nine whorls, and measures: Length, 3.2 mm.; 

 diameter, 0.8 mm. 



Genus EUMETA Morch. 



EUMETA BIA, new species. 

 Plate 12, fig. 4. 



Shell elongate-conic, white, subdiaphanous. Nuclear whorls 

 almost three, inflated, well rounded, smooth. Postnuclear whorls 

 slightly shouldered at the summit, well rounded, marked by three 

 spiral cords, of which the first, which is at the summit, is a 

 little less strong than the other two, the third is a little posterior to 

 the suture, while the median is a little nearer the suprasutural cord 

 than the one at the summit. In addition to the spiral cords, the 

 whorls are marked by slender, almost vertical axial ribs, of which 

 22 occur upon all the whorls but the last, which has 26. The junction 

 of the axial ribs and spiral cords form very feeble nodules, while the 

 spaces inclosed between them appear as squarish, well-impressed 

 pits. In addition to the sculpture the entire surface of the spire is 

 marked by fine lines of growth and exceedingly fine spiral striations 

 Sutures strongly constricted. Periphery of the last whorl marked 

 by a sulcus which is almost as wide as the sulcus separating the 

 suprasutural cord from the median, and like this, it is crossed by the 

 axial riblets. Base marked by a strong spiral cord bounding the 

 peripheral sulcus, the rest is slightly concave and marked by feeble 

 lines of growth and exceedingly fine spiral striations only. Aper- 

 ture quite large, strongly channeled anteriorly; outer lip thin, ren- 

 dered sinuous at the edge by the external sculpture which shows 

 through the substance of the lip; columella stout, curved; parietal 

 wall glazed by a thin callus. 



The type, Cat. No. 250367 U.S.N.M., comes from Port Alfred 

 (Coll. No. 1240). It is a young specimen having four postnuclear 

 whorls only, and measures: Length, 2.7 mm.; diameter, 0.1 mm. 



Family CERITHIIDAE. 

 Genus CERITHIUM Bruguiere. 



CERITHIUM CONTRACTUM Sowerby. 



Cat. No. 97995, U.S.N.M., six specimens from Albany, received 

 from the Albany Museum. Cat. No. 186801, U.S.N.M., two speci- 

 mens from Port Alfred (Coll. No. 166). 



CERITHIUM VULGATUM Linnaeus. 



Cat. No. 187042, U.S.N .M., one specimen from Port Alfred (Coll. 

 No. 579). 



