100 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



sidered cotypes. They come from Port Alfred (Coll. No. 1221). The 

 young specimen has seven postnuclear whorls, and measures : 

 Length, 5.1 mm.; diameter, 2 mm. The adult specimen has lost the 

 nuclear turns; the 12 postnuclear turns measure: Length, 8.6 mm.; 

 diameter, 2.4 mm. Cat. No. 249676, U.S.N.M., contains another 

 specimen from the same place (Coll. No. 948). Cat, No. 250349, 

 U.S.N.M., contains the nuclear tip of another specimen from the 

 same locality (Coll. No. 1222). 



TRIPHORIS FUSCOMACULATA Smith. 



Four lots of these specimens are in the collection of the United 

 States National Museum, all from Port Alfred. Cat, No. 186806, 

 three specimens (Coll. No. 172). Cat. No. 227718, three specimens 

 (Coll. No. 813). Cat, No. 227723, two specimens (Coll. No. 818). 

 Cat. No. 249684, two specimens (Coll. No. 956). 



TRIPHORIS SMITHI, new species. 

 Plate 10, figs. 7, 8. 



Shell very elongate-conic; yellowish white; irregularly flecked with 

 blotches and streaks of pale brown. Nuclear whorls partly decol- 

 lated. The first of the remaining turns is a little larger than the suc- 

 ceeding and is smooth. The three following volutions increase very 

 gently in size and are marked by two strong spiral cords, of which 

 the first is at the summit and the second some little distance above 

 the periphery, the space between the two, which is deeply concaved, 

 being about twice as wide as either of the keels. Postnuclear whorls 

 moderately rounded, ornamented with three strong spiral cords of 

 which the median is a little stronger than the other two. The first of 

 these is at the summit and the third a little above the suture. The 

 sulci separating the median from the other two cords are equal to the 

 median cord in width. In addition to the spiral sculpture, the 

 whorls are marked by axial ribs which are about half as strong as the 

 spiral cords. Of these ribs, 16 occur upon the first, 18 upon the sec- 

 ond, 20 upon the third and fourth, 21 upon the fifth, 22 upon the 

 sixth, and 24 upon the remaining turns. The junction of the axial 

 ribs and the spiral cords form feeble tubercles. Sutures feebly 

 impressed, scarcely differentiated from the sulci between the spiral 

 cords. Periphery of the last whorl rendered angular by a strong 

 spiral cord; the sulcus between which and the cords adjacent to it 

 posteriorly, is crossed by the continuations of the axial ribs. Base 

 very short and slightly rounded, marked by two spiral cords which 

 are less strong than the peripheral one, separated by deep spiral 

 grooves. Aperture moderately large, channeled anteriorly and pos- 

 teriorly; outer lip forming a decided angle at the junction with the 

 basal lip, rendered decidedly wavy at the edge by the external sculp- 



