58 JAPANESE MOLLU8K8, TRIFORID^E. 



TRIFORIDJE. 



Triforis fusca Dkr. Moll. Jap., pi. 2, f. 22. 



Kamakura, Tatagama, Boshiu, Tokyo Harbor (Stearns) ; Naga- 

 saki (Lischke) ; Deshiraa (Nuhn); N. coast of Tango (Gaiues). 

 Triforis violacea Q. & G. Astrol., pi. 55, f. 22, 23 ; Man. Conch. IX, p. 182. 



Deshima (Dkr.). 



Triforis granulata A. A R. Zool. Satnarang, pi. 11, f. 33a, b. 

 Triforis exilis Dkr. Moll. Jap., p. 10, pi. 2, f. 9. 



Deshima (Dkr.). 

 Triforis conspersus (A. Ad.) E. A. Smith. Ann. Mag.. 1875, Vol. XVI, p. 108. 



Cape Shima, 18 fath., sand (St. John). 

 Triforis purpuratus n. ap. 



Shell purple; cylindric-fusiform, the lower three whorls of nearly 

 equal diameter, those above tapering to form a long cone somewhat 

 over one-third the shell's length. Whorls 10, those of the spire 

 bearing three equal spiral series of rounded beads and a small 

 smooth thread immediately above the suture; la^t whorl with four 

 bead-series, the lower one nearly smooth, and on the base two smooth 

 ribs with clathrate intervals. Aperture as in T. granulata A. & R.,. 

 but tube very short, not closed. Alt. 5'4, diam. 1*8 mm. 



Kamakura (F. Stearns). 



Triforis (Viriola) corrugatus Hinds. Ann. Mag., 1875, Vol. XVI, p. 106. 



Cape Shima, 18 fathoms, sand (St. John). 



Not so stout a shell as the next species, judging by Singapore 

 specimens before me. 



Triforis (Viriola) tricinota Dkr. (cingulata Dkr. not Ad.; dunkeri Jous.) Moll. 

 Jap., pi. 2, f. 1. 



Kamakura, Tatagama, Boshiu, Tokyo Harbor (Stearns); N. 

 shore of Tango (Gaines). 



Dunker's figures of a young shell give but a poor idea of the adult 

 of this fine species. The three names given above are all founded 

 on the one original description of Dunker. 



PLANAXID-E. 

 Flanaxis pyramidalis Gmel. Nagasaki (Lischke, J. M.C., II, p. 70). 



Planaxis suloatus Born. Ann. Mag., 1875, Vol. XVI, p. 104; Man. Conch. IX, p. 

 276. 



Shore at Ooshima (St. John). 



