74 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



figured measures: Length, 7.5 mm.; diameter, 2.2 mm. Cat. No. 

 186858, U.S.N.M. (Coll. No. 228). Two specimens of this species col- 

 lected at Port Alfred (Coll. No. 228). Cat. No. 249705, U.S.N.M., 

 two additional specimens from Port Alfred (Coll. No. 977). 



PYRAMIDELLA (SYRNOLA) MINOR Smith. 



Cat. No. 186859, U.S.N.M., contains a specimen from Port Alfred 

 (Coll. No. 229). 



PYRAMIDELLA (SYRNOLA), species ? 



Cat. No. 187074, U.S.N.M., contains a young individual from Port 

 Alfred which we are unable to refer to any of the known forms (Coll. 

 No. 614). 



PYRAMIDELLA (SYRNOLA) TARPEIA, new species. 

 Plate 14, fig. 6. 



Shell small, elongate-conic, subdiaphanous. Nuclear whorls small, 

 very obliquely immersed in the first of the succeeding turns, above 

 which the rounded, tilted edge of the last volution only projects. 

 Postnuclear whorls high between the sutures, slightly rounded, 

 feebly shouldered at the summit; marked by retractive fines of 

 growth, and exceedingly fine, spiral striations. Sutures well im- 

 pressed. Periphery of the last whorl well rounded. Base somewhat 

 prolonged, well rounded, marked like the spire. Aperture oval, 

 posterior angle acute, outer lip thin, inner lip very short, decidedly 

 curved, slightly reflected, appressed; parietal wall covered with a 

 moderately thick callus. 



The type and two specimens, Cat. No. 187077, U.S.N.M., come 

 from Port Alfred (Coll. No. 618). The type has almost six. post- 

 nuclear whorls, and measures: Length, 3.7 mm.; diameter, 1.3 mm. 



PYRAMIDELLA (SYRNOLA) HERA, new species. 

 Plate 15, fig. 6. 



Shell elongate-conic, milk white. Nuclear whorls more than one, 

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

 the tilted edge of the last volution only projects. Postnuclear whorls 

 very slightly rounded, very feebly shouldered at the summit, marked 

 by rather coarse lines of growth and exceedingly fine spiral striations. 

 The preceding whorl shines through the substance of the succeeding 

 turns near the summit and appears as a band a little differently 

 colored than the rest of the shell. Sutures well marked. Periphery 

 well rounded. Base slightly prolonged, well rounded. Aperture 

 ovate; posterior angle acute; outer lip thin; the inner lip, short; 

 reflected over and appressed to the base; parietal wall covered with 

 a thin, callus. 



