PROSOBRANCHIATA. 295 
slightly curved, projecting towards the front, thin, sharp-edged, and smooth within ; 
the inner lip is very thin; the columella nearly straight and cylindrical; and the 
sinus, which is placed on the shoulder, is very wide, shallow, and triangular. 
This singular species appears to be exceedingly rare; only four specimens are known 
to me, one of which (the figured specimen) is in my own collection, the other three 
form part of Mr. Wetherell’s collection. 
Size.—Axis, 1 inch and 3-12ths ; diameter, 5-12ths of an inch. 
Locality.—Finchley. 
No. 219. Puieuroroma scauarata. F. #. Ldwards. Tab. XXXII, fig. 6, a, 6. 
P. testa elongato-fusiformt, turritd, tuberculatd, spiraliter lineata: spird acuminata, 
elevatad: anfractibus angulatis, brevibus, convexiusculis; marginibus posticis angustis, 
depressis, ad suturam granulato-lineatis ; ultimo anfractu repente coarctato, antice in cana- 
lem brevem, obliquum, producto ; tuberculis numerosis, obliquis ; lineis spiralibus confertis, 
Jiliformibus, irregularibus, sub-clathratis : apertura ovali ; labro leviter arcuato, ad humerum 
sinuato ; sinu latiusculo, sub-profundo, sub-trigono. 
Shell elongate, fusiform, turreted, tuberculated, spirally lined ; spire pointed, much 
produced, being more than half as long again as the aperture; whorls, eight or nine, 
exclusive of the pullus, angulated at the shoulders, and slightly convex in front ; 
the posterior margins very narrow, depressed, furrowed, and bordered round the 
suture by a narrow band, traversed by one or two raised, spiral lines, which are 
occasionally broken into small, roundish, oblong tubercles ; the last whorl is short, 
much contracted in front, and produced into a rather wide, short, but distinct, and 
oblique canal. The tubercles are numerous, oblong, narrow, slightly oblique, and a 
little compressed anteriorly. The spiral lines are crowded, thread-like, irregular, 
and unequal, slender lines frequently intervening between thicker lines; and they 
are roughened, almost decussated, by the conspicuous lines of growth. The aper- 
ture is oval, the outer lip very slightly arched, sharp-edged, and smooth and simple 
within ; and the sinus, which is placed on the angle of the whorl, is moderately 
wide, not very deep, and somewhat triangular in form. 
The coronated whorls, with their depressed, almost tabulated, margins, and 
the roughened lineation, give a marked character to this Pleurotoma, and will readily 
distinguish it from P. obscurata. 
Size.—Axis, nearly 11-12ths of an inch; diameter, 3-12ths of an inch. 
Localities. —Bramshaw, where it is not uncommon, Brooke, and Stubbington. 
