PHILINE. 15 
not raised; suture shallow round the top whorl, but deepens toward 
the aperture, and terminates in a rather short and narrow slit; 
ventral whorl is of a size equal to about half the aperture ; col- 
umella much curved, mouth large, piriform, expanded and rounded 
below, contracted above but not pointed ; lip very little sinuous, and 
somewhat cuncave on the upper part; the inner lip forming a very 
thin callus on the pillar. Shell thin and white ; sculpture consists of 
numerous lines of growth and microscopical close-set transverse 
lines. Alt. 9, diam. 6°5 mill. 
Cold area, N. Atlantic, Norweg. N. Atl. Exp. 1876, station 18, 
400 fms. and station 87, 488 fms. 
Philine Ossian-Sarsi Frirte, Nyt Magazin for Naturvidenska- 
berne, 1877, xxiii, 3, p.9,f.19 (shell), 19a, 6 (radula), 19c. (gizzard 
plate) ; Jahrb. D. M. G. iv, 1877, p. 264.—P. ossiani Kose t, /. ec. 
footnote. 
Seems to be amore attenuated species than finmarchica or fragilis, 
the species most nearly allied. 
Fig. 22. The teeth (radula) has16 joints. Gizzardis armed with 
three uncommonly large and stout plates, fig. 21, measuring no less 
than 6mm. The living animal being 15 mm. long the gizzard 
consequently measures two-fifths of its length and two-thirds of the 
shell, (Friele). 
P. FRAGILIS Sars. PI. 5, figs. 20, 21, 22. 
Shell very thin and fragile, pellucid, slightly opaline: ovate, 
rather ventricose, the base widely rounded, vertex truncated by 
nearly a straight line; spire distinctly impressed ; whorls 3; aper- 
ture very ample; outer lip flexuose, somewhat projecting toward 
the vertex, the terminal lobe rather wide, truncated ; columella pro- 
foundly concave; umbilical impression distinct, linear. Surface 
sculptured with numerous growth-striz decussated by dense, un- 
dulating spiral lines. Alt. 11 mill. Lateral teeth having a smooth, 
not serrate, keel within; no uncini; formula 1:0°1. 
Vadso, Norway in deep water. 
P. fragilis Sars, Moll. Reg. Arct. Norv. p. 296, pl. 18, f. 11a-e. 
P. cincuLaATA Sars. PI. 5, figs. 4, 5, 6. 
Shell minute, but less fragile than ordinary, subopaque, quad- 
rangular-ovate, nearly as wide as long, dilated in the middle; vertex 
