ture elongately oval, angular above, peristome with a wide but shallow sinus at the suture, 

 then strongly protracted ; columellar margin nearly straight, covered by a thin layer of enamel. 



Alt. 32, lat. ii; apert. alt. 16, lat. 5 Mill. 



I find no nearly allied species: this new one is remarkable for the difference in sculp- 

 ture of the upper and lower whorls. 



4. Surcula timorensis n. sp. PI. XXVII, fig. 9. 



Stat. 300. io°48'.6S., 123° '23 '.1 E. Timor-sea. 918 M. Fine grey mud. 1 Spec. 



Shell elongately fusiform, with rather short canal, thin, dirty white. Nucleus wanting, 

 remaining whorls 9, divided in 2 parts, of which the upper part is excavated, slightly convex 

 in itself in last 2 whorls, the lower part of each whorl with rounded, oblique axial ribs, dis- 

 appearing on last whorl, where there are only traces on ventral side, 1 1 in number on penult- 

 imate whorl. The finer sculpture consists of fine and coarse growth-striae and spiral ones, 

 stronger below the suture, across the convex ribbed part, fainter near the base. Aperture 

 elongated, angular above, peristome thin, with a wide, shallow sinus, just below the suture, 

 then strongly protracted ; columellar margin rather straight, with a faint fold at its upper half, 

 not very conspicuous in the front view, with a rather thin, smooth layer of enamel ; canal 

 wide, slightly directed to the left. Last whorl regularly attenuated towards its base. 



Alt. 53, lat. 15 1 /., ; apert. alt. 22, lat. 6 l /„ Mill. 



This species is similar in shape to the preceding one, but is more slender, nearly the 

 whole shell is ribbed, it is stronger and less shining, differs in spiral sculpture and by the 

 columellar fold. This latter character makes its place in Surcula somewhat doubtful and reminds 

 Borsouia, but the fold is rather blunt, like in some specimens of Pleurotoma (Gcmmula) con- 

 gencr Smith (may it be accidental?) and in other respects it better agrees with many species 

 of Surcula, so I have located it, though with some doubt, in this genus. 



5. Siircula pyram.ida.lis n. sp. PI. XXVII, fig. 10. 



Stat. 300. io°48'.6S., I23°23'.I E. Timor-sea. 918 M. Fine grey mud. 1 Spec. 



Shell fusiform, with strictly pyramidal spire and rather long, slender canal, thin, rather 

 smooth, greyish-white. Nucleus wanting, remaining whorls 9, straight, the straight line only 

 interrupted by a row of short, fold-like, oblique tubercles at lower part of whorls, somewhat 

 fainter near aperture, 1 7 in number on penultimate whorl ; the whorls have a second row of 

 slightly oblong, bead-like tubercles, just below ths suture, about 30 in number on last whorl; 

 the spiral sculpture consists of impressed striae, crossing the lower half of basal row of tubercles 

 on each whorl, and 2 or 3 just above the suture, the whole basal part of last whorl being 

 spirally striated or grooved, the upper part of whorls is nearly smooth, but for a few scarcely 

 visible spirals and fine and coarse flexuous growth-lines, becoming much coarser on canal, which 

 by the intercrossing of this sculpture is slightly granular. Aperture angular above, ending below 

 in a rather long, narrow, slightly contorted canal; peristome thin, with a wide, shallow sinus 



59 



