^^ 



396 DR. GWYN JEFFREYS ON THE MOLLUSCA OF [Juue 19, 



and the whorls more convex, the aperture ovate instead of roundish- 

 ovate." He called the striae longitudinal, as being in the direction 

 of the spire. 



6. Fusus DELiCATUS^ Jeflfrcys. (Plate XLIV. figs. 6, 6 a, 6 b.) 



Shell differing from F, sabini in the following respects : — It is 

 smaller, more slender and cylindrical, and regularly tapering ; the 

 spiral striae are much finer and more numerous ; the epidermis is 

 filmy and of a paler colour ; the whorls gradually increase in size, 

 and the last whorl is not so large in proportion to the others ; the 

 canal is shorter and considerably narrower ; the operculum is ear- 

 shaped and marked not only with close-set lines of growth but with 

 a few oblique striae in the opposite direction. L. l*2o, B. 0'5. 



Several specimens from Stations 8 and 9, 608 and 640 fathoms ; 

 but they were mostly inhabited by a species of Sipunculus. Also 

 from 540 fathoms in the ' Knight Errant ' cruise, and erroneously 

 named in my list of the MoUusca " Fusus turritus." 



7. Fusus HiRsuTus^ Jeffreys. (Plate XLIV. figs. 7, la.) 



Shell turreted, rather solid, ojjaque, and of a dull hue : sculp- 

 ture, numerous fine and sharp spiral striae, which are alternately 

 but irregidarly larger and smaller ; they extend to the end of the 

 canal ; there are about 50 on the body-whorl, 20 on the penultimate, 

 and 12 to 15 on the next whorl ; besides these the surface is covered 

 with minute and close-set longitudinal striae, which produce by their 

 intersection a decussation on the upper whorls : colour under the 

 epidermis chalky-white : epidermis brownish-yellow, pilose, each of 

 the spiral striae being thickly clothed with countless short bristly 

 hairs : spire long, tapering to a blunt point ; apex regular, button- 

 shaped : whorls 7-S, tumid, gradually enlarging ; the last occupies 

 about two thirds of the shell with the mouth upwards : suture exca- 

 vated : mouth large, pear-shaped, infliected above ; length (including 

 the canal) nearly half that of the shell : canal short, very wide and 

 open, turning to the left : outer lip curved and thin : i?mer lip broad 

 and polished : pillar flexuous as in other species : operculum trian- 

 gular, strong, light horn-colour, marked with fibrous and corrugated 

 but irregular lines of growth ; nucleus as in congeners. L. 2*25, B. 

 0-9. 



A single but perfect specimen from Station 9, 608 fathoms. 

 Professor Torell dredged this species at Spitzbergen. 



8. Fusus C0NCINNUs^ Jeffreys. (Plate XLIV. figs. 8, 8 a.) 



Shell of an elegant shape, thin, semitranspareut, and rather 

 glossy : sculpture, numerous and delicate spiral striae which cover 

 the whole of the shell ; there are from 30 to 40 on the body-whorl, 

 12 to 15 on the penultimate, 8 to 10 on the next, and 6 to 8 on the 

 preceding whorl ; the uppermost two whorls are apparently smooth, 

 but show under the microscope indistinct traces of the striae ; there 



^ Delicate. ^ Bristly. ^ Keat. 



