450 MOLLUSCA FEIOM THE HOPE ISLANDS, N. QUEENSLAND, 



twenty-eight rather straight and narrow ribs cross the whorls 

 obliquely, each terminating above in a round bead. Ribs more 

 crowded on the last whorl, and continuing on the base. Spiral 

 striae appear in the basal interstices. Length 2 35; breadth 

 0-65 mm. 



A few specimens, from 5-10 fathoms, off the Hope Islands. 

 Another from 15 fathoms, off the Palm Islands. The species is 

 chiefly distinguished by the bead-collar below each suture. It is 

 named in honour of my companion on the trip, Mr. T. Griffith 

 Taylor. 



TURBONILLA TENUISSIMA, n.sp. 



(Plate xlii, fig.78.) 



Shell minute, acicular, tliin, translucent, imperforate. Whorls 

 nine, and a small heberostrophe protoconch, rounded and con- 

 tracted at the sutures. Sculpture : first three whorls smooth, 

 remainder crossed by about thirty fine, sharp, radial, arcuate 

 ribs, which gradually vanish on the base. Length 2-3; breadth 

 0*5 mm. 



A few specimens, from 5-10 fathoms, Hope Islands. 



TURBONILLA TRIBULATIONIS, n.Sp. 



(Plate xlii., figs.79-80.) 



Shell small, turreted. Colour dull white. Whorls seven, and 

 a produced recumbent heterostrophe apex. Sculpture : about 

 twenty-one prominent, slightly bowed, radial ribs, whose summits, 

 linked by a spiral cord, project as a toothed crown above the 

 whorl. At the basal angle another spiral cord, knotted by the 

 passage of the ribs, encircles the shell, beyond which the ribs 

 diminish. Fine spiral grooves occupy the interstices of the 

 radials. Aperture oblong, plication not apparent from the 

 exterior. Length 4*1; breadth l'25mm. 



This appears to be related to T. belonis Melvill ife.Standen,* 

 than which it is smaller, and more coarsely sculptured. A few 

 specimens, from 5-10 fathoms, 



* Melvill & Standen, Journ. of Conch, viii. 1897, p.303, PI.x., f.56. 



