PULMONATA. 85 
The whorls enlarge more regularly in this species than in Z. cawdata, and the shell, 
consequently, is more pyramidal in its general form; and the columellar fold is not so 
prominent nor so much twisted as in that species. From L. /us/formis it is distinguished 
by the greater convexity of the whorls, and the flattened sulcated fold. The rounder 
whorls, the depression of the upper margin, and the acute fold of Z. ciucfa, separate it, 
as clearly, from that species. 
Although M. Deshayes, in his description of Z. pyramidalis, cites Brard without 
comment, I feel great difficulty in referring his shell to Brard’s Z. pyramidalis. That 
shell, judging from the description and figure, is elongated and narrow, and 
corresponds, as well in the contour and proportion of the whorls and the form of the 
aperture, as in the character of the depressed columellar fold, with LZ. longiscata, to 
which species I think it belongs. It certainly appears to differ widely from the 
ventricose and comparatively short shell described by M. Deshayes, in which the 
aperture is large and effuse, and the fold prominent.* The English specimens referred 
to L. pyramidalis of M. Deshayes, agree very well with that author’s description and 
figure, but not with Brard’s; while, on the other hand, adult specimens of ZL. longiscata 
frequently occur, which correspond with Brard’s LZ. pyramedalis. 
The shell represented by fig. 3a—@, for the use of which I am indebted to 
Mr. Sowerby, is narrower than the type of this species ; and the volutions are so flat, 
and the general shape so fusiform, that, at first sight, it might be referred to L. fusi- 
formis. The fold, however, is flattened and sulcated; and I therefore consider it to 
be merely an aberrant form of L. pyramidalis, combining the columellar fold of that 
species with the flat-sided spire and subfusiform shape of L. fusi/ormis. 
Size.—Axis 2 inches; diameter, 9-10ths of an inch, nearly. 
Localities —Hordwell; Headon Hill; and in France, La Villette, Montmartre , and 
Vergnols, near Aurillac. 
No. 32. Limnma toneiscaTa. Brard. Tab. XII, fig. 3 a—t. 
Lymnfe erriciz. Brard. 1809. Ann. du Mus, vol. xiv, p. 432, t. 27, figs. 15, 16. 
— PYRAMIDALE, Brard(?) 1810. Ib., vol. xv, p. 407, t. 24, fig. 2. 
LIMNEUS LONGIscatuS, Brogn. 1810. Ib., p. 372, t. 22, fig. 9. 
— — Brogn. 1811. Jour. de Phys., &., vol. 72, p. 421. 
LyMNEUS Lonetscatus, Fér. 1814. Mem geol., &., p. 59, No. 1. 
LimneEa LonetscatTa, Sow. 1823. Min. Con., vol. iv, p. 57, t. 343. 
LyMN zA — Desh. 1824. Desc. des coq. foss., &c., vol. ii, p. 92, t. 11, 
figs. 3, 4. 
— — Desh. 1824. Encycl. Meth. Vers., t. 2, p. 356, No. 1. 
* This want of resemblance between the L. pyramidalis of M. Deshayes and that of Brard is noticed by 
Bouillet in his Catalogue above referred to. 
