SOUTH AFRICAN MARINE MOLLUSKS. 85 



ribs lend the whorls a cloth-like texture. Suture well impressed. 

 Periphery of the last whorl feebly angulated. Base short, moderately 

 rounded, marked by the continuation of the axial ribs and spiral 

 lirations, the latter of varying strength. Aperture irregularly oval; 

 posterior angle obtuse; outer lip moderately thin, showing the exter- 

 nal sculpture within; inner lip very oblique, almost straight, reflected 

 over and appressed to the body whorl, except at the extreme anterior 

 tip, which is free. The columella is provided with a feeble fold at its 

 insertion. Parietal wall glazed with a thin callus. 



The type, Cat. No. 249715, U.S.N.M., comes from Port Alfred 

 (Coll. No. 987). It has nine postnuclear whorls, and measures: 

 Length, 15 mm.; diameter, 4.7 mm. 



Two additional specimens of this species come from Port Alfred. 

 They are listed as Cat. No. 186842, U.S.N.M. (Coll. No. 209), and 

 Cat. No. 249702 /U.S.N.M., (Coll. No. 974). 



TURBONILLA (MORMULA) DECORA Smith. 



Cat. No. 186849, U.S.N.M., contains a specimen of this species from 

 Port Alfred (Coll. No. 216). Another specimen from the same locality 

 is listed as Cat. No. 250377, U.S.N.M. (CoU. 1250). 



TURBONILLA (PERISTICHIA) BATHYRAPHE Sowerby. 



Cat. No. 186848, U.S.N.M., contains one specimen of this species 

 from Port Alfred (Coll. No. 215). 



Genus ODOSTOMIA Fleming. 



ODOSTOMIA (ODOSTOMELLA) FARICA, new species. 



Plate 18, fig. 4. 



Shell small, elongate-ovate, milk white, with three narrow chestnut 

 bands, the first of which encircles the posterior fourth of the space 

 between the sutures ; the second is somewhat anterior to the periph- 

 ery, while the third is about one-half of the distance of the space 

 between the anterior extremity of the base and the periphery, poste- 

 rior to the anterior extremity. Nuclear whorls small, polished, 

 deeply immersed in the first of the succeeding turns, above which the 

 tilted edge of the last volution only projects. Postnuclear whorls 

 well rounded, narrowly shouldered at the summit, marked by slender, 

 almost vertical, axial riblets, which are about two-thirds as wide as 

 the spaces that separate them. Of these riblets, 22 occur upon the 

 second, 24 upon the third, and 26 upon the penultimate turn. Suture 

 strongly constricted. Periphery of the last whorl well rounded. 

 Base moderately well rounded, marked by the feeble continuations 

 of the axial ribs, which extend to the umbilical chink. Aperture oval; 

 posterior angle obtuse; outer lip thin, showing the external sculpture 

 within; inner lip slightly curved, reflected, and appressed to the 

 80737°— Bull. 91—15 7 



