PULMONATA. 95 



No. 46. LimNjEA angusta. F. E. Edwards. Tab. XIV, fig. 6 a — b. 



L. testa angusta, elongatd, sub-turritd, quinquies vel sexies circumvolutd ; spird elevatd, 

 acuminata ; anfractibus convexis, lineis incrementi obscure striatis : aperturd ovato-oblongd, 

 antice sub-dilatatd, spiram in longitudinem parum super anti ; plica columellari crassd, 

 tereti, parum eminenti, sub-tortuosd. 



If it were not for the thick, round, columellar fold, and the elongated aperture, I 

 should refer this species to L. longiscata, which it much resembles. It is a narrow, 

 elongated, sub-turreted shell, formed of five or six convex volutions, obscurely 

 striated by the lines of growth ; the spire elevated and pointed. The aperture is 

 a longish oval, equal to half the length of the shell, and rather spread out in front ; 

 the columellar fold is thick, round, not very prominent, and but slightly twisted. 



The long narrow shape of this shell separates it from every species except 

 L. longiscata ; from the latter shell it is easily distinguished by the fold, so opposite in 

 character to the broad, flat, sulcated fold which characterises that species. 



Size. — Axis, \\ inch; diameter, not quite ^ an inch. 



Localities. — Hordwell ; Headon Hill. 



No. 47. Limislea arenularia. Brard. Tab. XIV, fig. 13 a — b. 



Lymnee des gres. Brard. 1810. Ann. du Mus., vol. xv, p. 409, t. 24, fig. 5-6. 

 Lymneus arenularius. Feruss. 1814. Mem. geol. &c. p. 61, No. 15. 

 Lymn^a arenularxa. Desk. 1824 — 37- Desc. des coq. foss., &c, vol. ii., p. 93, t. 11, 

 figs. 7-8. 



L. testa ovato-acuminald, sub-turritd, Imvi ; anfractibus septenis, convexiusculis, suturis 

 conspicuis : aperturd ampld, semi-ovali, spiram in longitudinem superanti ; plica columellari 

 rotundatd, minima, parum contortd, sub-proeminenti. 



A smooth, ovate, oblong sub-turreted shell, with a moderately elevated and taper 

 spire ; volutions seven or eight, slightly convex, separated by a conspicuous, but not 

 deep, suture, and occasionally striated by faint lines of growth : the aperture rather 

 large, semi-oval, a little dilated in front, and longer than the spire ; the columellar fold 

 rounded, small, slightly twisted, and not very prominent. 



The English shells correspond so nearly with M. Deshayes's figures, and with 

 some French specimens, for which I am indebted to that gentleman, as not to leave 

 any doubt as to this identification, notwithstanding that M. Deshayes describes the 

 aperture as very oblique, and the columellar fold as much twisted, characters which 

 I have not found prominent either in the English or French specimens. 



Size. — Axis, 4- 1 Oths of an inch ; diameter, 7-20ths of an inch. 



Localities. — Hordwell ; Headon Hill. French : Beauchamp, near Pointoise, 

 Valmondois. 



