SOUTH AFEICAN MARINE MOLLUSKS. 69 



constricted. Periphery of the last whorl well rounded. Base moder- 

 ately long, well rounded, marked like the spire. Aperture oval; 

 posterior angle acute; outer lip thin, showing the growth lines within; 

 inner lip almost vertical, decidedly reflected, free on the anterior 

 half; parietal wall glazed with a moderately thick callus. 



The type and another specimen, Cat. No. 249713, U.S.N.M., come 

 from Port Alfred (Coll. No. 985). The type has six postnuclear 

 whorls, and measures: Length, 9.2 mm.; diameter, 3.1 mm. 



MELANELLA, species? 



Cat. No. 250386, U.S.N.M., contains the tip of a MelaneUa, con- 

 sisting of five whorls, which are absolutely cylindrical, and differs from 

 anything I know of from South Africa, but I refrain from describing 

 it until better material is at hand. Port Alfred (Coll. No. 1259). 



MELANELLA CIFARA, new species. 

 Plate 20, fig. 5. 



Shell minute, acicular, seini translucent, flesh-colored, variegated 

 with brown. Nuclear whorls two, well rounded, translucent, pale 

 brown. Postnuclear turns very slightly rounded, almost trans- 

 parent, variegated with translucent pale brown and opaque flesh- 

 colored spots, appressed at the summit, polished, apparently without 

 varicial markings. Suture scarcely defined. The inner posterior 

 termination of the whorls appear as a suture through the substance 

 of the shell. Periphery well rounded. Base attenuated, well 

 rounded. Aperture elongate-oval; posterior angle acute; outer lip 

 drawn forward in the middle to form a claw-like element; inner lip 

 almost straight, oblique, reflected over and appressed to the body 

 whorl throughout its entire length; parietal wall glazed by a moder- 

 ately thick callus. 



The type, Cat. No. 250381, U.S.N.M., comes from Port Alfred 

 (Coll. No. 1254). It has five postnuclear whorls, and measures: 

 Length, 2.1 mm.; diameter, 0.6 mm. 



MELANELLA IRAFCA, new species. 

 Plate 20, fig. 6. 



Shell of medium size, regularly elongate-conic, bluish white, flecked 

 with irregularly disposed blotches of pale golden yellow, a narrow 

 peripheral zone of the same tint, and with a small spot of the same 

 color marking the umbilical region. Nuclear whorls decollated. 

 Postnuclear whorls rather high between the sutures, which are very 

 poorly expressed, the posterior termination of the inside of the whorls 

 appearing as the suture. Outer surface polished, marked only by an 

 occasional varicial line. Periphery of the last whorl well rounded. 

 Base prolonged, well rounded. Aperture elongate-oval; posterior 

 angle acute; outer lip drawn forward into a claw-like element in the 

 80737°— Bull. 91—15 6 



