318 APPENDIX. 
Opostomia TRUNCATULA? Jeffreys. Tab. XXXI, fig. 16. 
ODOSTOMIA TRUNCATULA. Jeff. Ann. Nat. Hist., new ser., 1850, p. 150. 
— — Forb. and Hanl. Hist. Brit. Moll., vol. iii, p. 294, pl. 96, fig. 8, 
1850. 
Spec. Char. Testd elongato-turritd, subulatd vel subcylindraced, levigatd, pellucidd ? tenui ; anfractibus 
5—6 conveviusculis ; aperturd ovatd, labro acuto ; umbilico parvo ; columelld obsoleté unidentatd. 
Shell elongately turreted, tapering, or nearly cylindrical, smooth, thin, and transparent? yolutions 
5—6, somewhat flattened ; aperture ovate ; outer lip sharp; columella with an obsolete tooth, and small 
umbilicus. 
Length, = inch. 
Locality. Cor. Crag, Sutton. Recent, Britain- 
Three or four specimens in my possession appear to correspond with the recent shell above referred to. 
In comparing my fossils with some specimens of the recent shell, obligingly presented to me by Mr. Barlee, 
the greatest difference appears to be in the apex, which, in the living shell, is somewhat flatter and more 
obtuse than in my fossil, whose apex is blunt or obtuse, but not flat, neither does it appear to have been 
reversed. My specimens unfortunately are not in the best state of preservation. 
Assiminea Grayiana is enumerated as a fossil by Mr. Dixon, in his ‘ List of Shells from the Upper 
Tertiaries of Bracklesham.’ 
Rissoa souuta, Philippi. Tab. XXXI, fig. 10. 
Rissoa sotuta. Phil. En. Moll. Sic., vol. ii, p. 130, pl. 23, fig. 18, 1844. 
—- -—— ? Jeffreys. Ann. Nat. Hist., vol. xx, p. 16. 
— — ! Forb.and Hanl. Hist. Brit. Moll., vol. iii, p. 131, pl. 75, figs. 3, 4, 1850. 
Spec. Char. Testa minimd, elongato-turritd, levigatd, anfractibus (quatuor vel quinque) rotundato- 
ventricosis, suturis profundis ; aperturd suborbiculari. 
Shell minute, elongately turreted, smooth ; whorls (four or five) roundedly ventricose, sutures deep ; 
aperture nearly orbicular. 
Length, +; ich. 
Locality. Cor. Crag, Sutton. Recent, Mediterranean. 
I have found, in the Sutton sand, a single specimen of a shell which corresponds closely with the 
figure and description by Philippi, above referred to. 
Messrs. Forbes and Hanley, p. 131, supra, have expressed great doubt respecting the existence of 
Philippi’s species, and they have appropriated his name to the British shell. I fully participate in their 
doubt respecting the identity of the Mediterranean form with that found in our own seas; but, judging 
from the fossil now figured, I am much inclined to believe the Mediterranean shell to be a valid species ; 
and in the event of its being hereafter so determined, I would suggest the name of intersecta for the recent 
British shell, as in that case so/vta must be retained for the one to which it was first given. 
The Crag shell may be more particularly described as being somewhat thin, and now opaque, though 
perhaps transparent in the living state; quite smooth, without appearing to have lost its outer coating ; 
although somewhat elongate in the spire (differing therein from the recent British shell), the apex is obtuse, 
with at least four volutions, and a deep suture, particularly the last (but not “‘disjoined’’), and with a 
distinct and deep umbilicus. The outer lip is simple, not thickened by a ridge, neither is it toothed 
within ; the aperture somewhat rounded, but the diameter of the opening is rather greater in a longitudinal 
direction, and is about two fifths the entire length of the shell, with the lower part slightly effuse. 
