Testaceous Pneumonobranchous Mollusca of Great Britain.” 519 
aperture of a true Auricula; but I have not ventured to break 
my solitary specimen to examine the internal structure of the 
spire, which I consider the main test of distinction between that 
genus and Tornatella conchologically considered. The upper 
whorls are very small in proportion; and the last, as usual in 
the genus, occupies more than two thirds of the entire shell. 
Mr. Clark of Bath, whose well known zeal and industry as a 
British conchologist is more than equalled by his accuracy, has 
since informed me that he discovered a specimen some years 
ago among a parcel of West Indian shells of no great value. 
This is an interesting fact, and must leave the indigenousness of 
this species (at present at least) in some doubt. 
The section of Auricula (Conovulus Lam.), to which this be- 
longs, are all natives of tropical climates. 
LIMNEUs. 
L. glutinosus, p. 371. 
Dr. Goodall possesses specimens in his cabinet marked as from 
* Scarborough ; Swaffham ; Windermere; Oxford; Eton; and 
Deal marshes.” Wittleseamere ; Mr. Stephens. From this latter 
place I have seen specimens which measure full three quarters 
of an inch in length. Stanmore, Middlesex ; Mr. G. B. Sowerby. 
L. pereger, p. 374. 
Var. y. Gulnaria lacustris. Leach’s British Mollusca 
(inedited)? | Ead. Brit. Mus. 
The Limnei ovatus, vulgaris and pereger of Pfeiffer, all appear 
to belong to this species. 
L. major, p. 375. 
Var. 8. Surry and Croydon cui. BEA uncommon. 
The Physa scaturiginum of Draparnaud, which Dr. Turton 
has noticed as British in one of the Numbers of the Zoological 
Journal, is the fry of this species. 
VOL. XVI. Sx This 
