SOUTH AFRICAN" MARINE MOLLTJSKS. 105 



The type and another specimen, Cat. No. 186804a, U.S.N.M., come 

 from Port Alfred (Coll. No. 170). The type has 13* whorls, and 

 measures: Length, 5 mm.; diameter, 1.7 mm. Cat. No. 227717, 

 U.S.N.M., contains six specimens from the same locality (Coll. No. 

 812). Cat. No. 249679, U.S.N.M., one specimen from same locality 

 (Coll. No. 951). 



TRIPHORIS CAPENSIS, new species. 



Plate 5, fig. 4. 



Shell very elongate-ovate, white. Nuclear whorls decollated 

 Postnuclear whorls flattened, the first two marked by two strong 

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

 little nearer the suture than to the one at the summit. Beginning 

 with the second whorl, a slender spiral cord appears between the other 

 two, which increases rapidly in size obtaining almost the strength of 

 the other two on the last volution. In addition to these spiral cords, 

 the whorls are marked with well rounded, almost vertical, straight, 

 axial ribs, of which 14 occur upon the first, 18 upon the second to fifth, 

 20 upon the sixth, and 22 upon the penultimate turn. The junctions 

 of the axial ribs and the spiral cord form low tubercules, while the 

 spaces inclosed between them appear as deep squarish pits. Sutures 

 strongly coustricted. Periphery of the last whorl angulated, marked 

 by a strong spiral cord which is feebly tuberculated. Base moder- 

 ately long, the posterior half provided with two equal and equally 

 spaced, spiral cords, while the anterior portion appears as a strongly 

 tumid area. Aperture decidedly irregular, strongly channeled 

 anteriorly; posterior angle decidedly channeled; outer lip thin, 

 decidedly curved and very strongly produced anteriorly; the 

 portion facing the columella is pinched in and so curved as to almost 

 touch the columella, leaving only a very narrow slit between it and the 

 columella; parietal wall covered with a very thick callus. 



The type and another specimen, Cat. No. 187044, U.S.N.M., were 

 collected at Port Alfred (Coll. No. 582). The type has eight post- 

 nuclear whorls, and measures: Length, 5.1 mm. ; diameter, 2 mm. 



TRIPHORIS MADRIA, new species. 

 Plate 12, fig. 5. 



Shell elongate-conic, white. Nuclear whorls large, forming a rather 

 bulbous apex on the shell. The first turn smooth, the following 

 encircled by three smooth, spiral bands. The second turn is larger 

 in diameter than the two succeeding. Post-nuclear whorls moder- 

 ately rounded, ornamented with three spiral cords, of which the one 

 at the summit is a little weaker on the early whorls than on the rest. 

 The third cord is about as far from the suture as it is from the median, 

 while the median cord occupies a position halfway between the other 

 two. The sulci separating the spiral cords are a little wider than the 

 cords. In addition to the spiral cords the whorls are marked by 



