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EOCENE MOLLUSC A. 



convexiusculis, postice concavis, oblique plicatis ; ultimo anfractu antice in canalem rectum, 

 pralongum producto ; costellis numerosis, rotundatis, brevibus ; lineis iransversis con/ertis, 

 supra partes anlicas et medianas anfractuum incequalibus, supra margines jjosticas tenuibus, 

 regularibus : aperturd obovatd : labro leviter arcuato in margine late sinuato. 



Shell long, fusiform, somewhat turreted, ribbed, and ornamented with concentric, 

 raised lines, which cover the whole surface. The spire is pointed and short, scarcely 

 exceeding one third of the whole length of the shell. The whorls are slightly convex, 

 and bear on the shoulders a single row of rather closely set, short, oblique ribs, 

 rounded on the upper surface, and separated by concave spaces as wide as the ribs ; 

 the posterior margins are broadly furrowed, and present* a series of fine, curved 

 plications, caused by the successive margins of the sinus ; the last whorl is much 

 contracted in front, and produced into a very long, straight canal. The transverse 

 lines over the front and middle parts of the whorls are close-set, prominent, 

 unequal, thickish, thread-like lines alternating with slender ones ; over the posterior 

 margins the concentric lines are very fine, numerous, equal, and granulated by the 

 marginal plications. The aperture is of an oblong-oval form ; the outer lip but 

 slightly arched ; and the sinus, which is placed towards the front of the margin, 

 is wide, sub-trigonal, and not very deep. 



This species appears to be very rare ; and although my specimens are rather 

 crashed, the long, narrow beak is too remarkable to be passed without notice. 



Size. — Axis, 1 inch and 1-1 2th nearly; diameter, 4-12ths of an inch. 



Locality. — Finchley. 



No. 196. Pleurotoma cochlis. F. E. Edwards. Tab. XXXIII, fig. 6. 



P. testa elongato-fusiformi, turrit d : spird acuminata: anfractibus convexis, brevibus, 

 ad humeros obtuse angulatis ; postice late excavatis, marginatis, transversim subtilissime. 

 lineatis, caterum lavibus ; ultimo anfractu repente coarctaio, in canalem longum producto : 

 aperturd obovatd ; labro alaformi; sinu prof undo, sub-trigono, media in margine collocato. 



A long, fusiform, turreted shell, with a much-produced, pointed spire, formed of 

 nine or ten whorls : the whorls are convex, and obtusely angulated at the shoulders ; 

 the posterior margins remarkably wide, depressed, broadly furrowed, and orna- 

 mented with numerous, close-set, very fine, concentric, raised lines, nearly regular and 

 equal, except those near the sutural edge, where five or six concentric lines, thicker 

 and more prominent than the others, form a border round the suture ; the middle 

 and front parts of the whorls are smooth ; the last whorl much contracted and 

 produced in front into a long, straight canal. The aperture is of an oblong-oval 

 form ; the outer lip wing-shaped, projecting towards the front ; and the sinus, which 

 is placed in the middle of the margin, is deep and triangular. 



