SOUTH AFKICAN MAEINE MOLLUSKS. 135 



JEFFREYSIA CAPENSIS Sowerby. 



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

 National Museum, all from Port Alfred. Cat. No. 187059, six speci- 

 mens (Coll. No. 597). Cat. No. 187068, one specimen (Coll. No. 606). 

 Cat. No. 186812a, one specimen (Coll. No. 178a). Cat. No. 187063a, 

 two specimens (Coll. No. 601). Cat. No. 250431, two specimens (Coll. 

 No. 1304). Cat. No. 249723, one specimen (Coll. No. 995). In addi- 

 tion to these we have seen 67 specimens in Colonel Turton's collection. 

 (Coll. No. 1592). 



Family ASSIMINEIDAE. 

 Genus ASSIMINEA Leach. 



ASSIMINEA OVATA Krauss. 



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

 National Museum, from Port Alfred, Cat. No. 1868146, one specimen 

 (Coll. No. 180). Cat. No. 227735, three specimens (Coll. No. 830). 

 Cat. 249728, two specimens (Coll. No. 1000). 



ASSIMINEA UMLAASIANA Smith. 



The United States National Museum contains three lots of this 

 species from Port Alfred. Cat. No. 186814, three specimens (Coll. 

 No.. 180). "Cat. No. 186815, six specimens (Coll. No. 181). Cat. No. 

 227734, eight specimens (Coll. No. 829). In addition to these I have 

 seen 78 specimens from Port Alfred which have been returned to 

 Colonel Turton (CoU. No. 1596). 



ASSIMINEA CAPENSIS, new species. 

 Plate 6, fig. 9. 



Shell broadly conic, thick, light brown. Nuclear whorls not dif- 

 ferentiated from the postnuclear turns. Postnuclear whorls well 

 rounded, feebly shouldered at the summit, marked by decidedly 

 retractive lines of growth and exceedingly fine spiral striations. 

 Sutures moderately constricted. Periphery of the last whorl strongly 

 inflated, obscurely angulate. Base short, well rounded, marked like 

 the spire. Aperture very large, irregularly ovate; posterior angle 

 acute; outer lip thick within, thin at the edge; inner lip thick, 

 appressed, strongly curved, continuous with the thick parietal 

 callus. 



The type, Cat. No. 186814a, U.S.N.M., comes from Port Alfred 

 (Coll. No. 180). It has six whorls, and measures: Length, 6 mm.; 

 diameter, 3.5 mm. Cat. No. 227824 U.S.N.M., contains two specimens 

 from the same locality (Coll. No. 829a). Another specimen, Cat. No. 

 250414, U.S.N.M., is from the same locality (Coll. No. 1287). 



