194 TORNATINA. 



T. GRACILIS A. Adams. PI. 25, fig. 49. 



Shell cylindrically fusiform, slender, semipellucid, horn-colored, 

 -apex acuminated, transversely engraved with a very fine spiral 

 striae ; spire produced, pointed, whorls four, the first prominent ; 

 aperture narrow, dilated anteriorly ; columella with a single plait. 

 {Ad.). 



China Sea (Cuming) ; Japan (A. Ad.) ; Torres Strait (Brazier). 



T. gracilis A. Ad., Thes. Conch, ii, p. 569, pi. 121, f. 36 ; Ann. 

 Mag. N. H. (3), ix, p. 153.— Braz. P. L. S., N. S. W. ii, p. 82. 



This diflfers from T. singaporensis in possessing minute spiral 

 striae. 



T. SINGAPORENSIS Pilsbry, n. sp. Pi. 50, figs. 31, 32, 33, 34. 



Shell white, slender, elongated-subcylindrical, with elevated spire 

 and very large mamillar apex ; post-apical whorls nearly four, 

 slightly convex, separated by narrowly, deeply channelled sutures ; 

 last whorl tapering above and below, smooth except for delicate, 

 curved growth-striae. Aperture narrow and long, two-thirds the 

 entire length of shell ; columella calloused, with an extremely weak 

 fold, and a slight groove in the umbilical region. 



Alt. 3-2, diam. 1-35 mill. 



Singapore (Dr. S. Archer !). 



This tiny species has an unusually long spire, with very large 

 apical button. The surface entirely lacks spiral striae, and the col- 

 umellar fold (fig. 31) is unusually weak. In the type specimen the 

 spire of the apical whorl is directed away from the face of the shell. 

 Fig. 32 represents a front view of the spire, showing the umbilical 

 aspect of the uptilted apex ; fig. 33 represents a back view of the 

 spire, showing the apical aspect of the nuclear shell. The figures 

 being camera lucida sketches, may be depended upon for accuracy 

 of outline and proportion, qualities unfortunately lacking in many 

 of the figures of Sowerby's Thesaurus. 



T. FusiFORMis A. Adams. PI. 22, fig. 27. 



Shell cylindrically fusiform, white, smooth, semipellucid, longitu- 

 dinally somewhat sulcated ; sjiire elevated, acuminate; whorls 5, 

 somewhat channelled above. Aperture linear, contracted in the 



