JACKSON: KIRLIOGRAPHYOF NON->rARINE MOI.LUSCA OF LANCASHIRE. 5! 



At p. 112, first record for Vertigo alpestris in Lancashire. Found 

 at Clithero {sic) by Mr. Gilbertson. At p. 117, specimens of Valvata 

 depressa Pfr. sent to Alder trom Lancashire by Mr. Kenyon — not 

 considered more than a variety of V.piscinalis. 



1837. Thornber, William. — [Mollusca] History of Blackpool, 

 Poulton, 1837, p. 253. 



The author says: — "The land and freshwater kinds are here 

 omitted, but it may be worthy of notice that the Valvata depressa of 

 Pfeiffer, and not hitherto described as a British species, is found about 

 Blackpool; as well as the rare Planorbis nitidus of Muller, identical 

 with the Nautilus lacustris of Dr. Turton's 'Conchological Dictionary' 

 and described by him in his more recent Manual of Land and Fresh 

 Water shells under the name of Segmentina nitiday Liformation 

 supplied by Mr. Kenyon of Preston. 



1838. Hall, T. B. — Conchology of the neighbourhood of Liver- 

 pool. Naturalist, iii., p. 323. 



Embodies a list of shells and remarks on the localities, furnished 

 by Thomas Glover, Esq., of Manchester. — LimncBus stagnalis, L. 

 elongatus, L. palustris ; Fhysafontinalis; Aplexa hypnorum; Planorbis 

 carinatus, P. vo?-tex (ponds about Liverpool) ; Paludina vivipara 

 (Southport), P. impura (Leeds and Liverpool Canal); Cyclas cor?iea 

 and Anodon cygneus (in almost all the ponds). 



1838. Alder, Joshua.— Supplement to a Catalogue of the Land 

 and Fresh-water Testaceous Mollusca, found in the Vicinity of 

 Newcastle. Trans. N.H.S. of N.,D., and Nezvc.-on-Tyne, vol. ii., 

 part 2, pub. 1838, p. 340. 

 Casual reference to Vertigo alpestris at Clitheroe. 

 1840. Forbes, Edward. — Report on the distribution of Pulmoni- 

 ferous Mollusca in the British Isles. Report, British 

 Associatioti (Birmingham Meeting, Aug., 1839), pp. 127 

 to 147. 

 Mention made of Acme lineata and Paludina vivipara at Preston ; 

 Pupa alpestris in Lancashire. 



1840. Gray, John Edward. — A Manual of the Land and Fresh- 

 water Shells of the British Islands (by William Turton, M.D.), 

 London, 1840. 

 Lancashire localities at pp. 37, 38, 98, 203, and 291. 

 1840. Hincks, William. — On Mr. Gray's Edition of Turton's 

 Manual. Ann. Nat. Hist., v., pp. 366-7. 

 A criticism ; with note anent Cyclas rivicola in Lancashire. 

 1840. Thompson, Wm. — Catalogue of the Land and Freshwater 

 Mollusca of Ireland. Ann. and Mag. Nat. Hist.,\\., pp. 112 

 and 201. 

 Records for Pupa anglica and Vertigo alpestris in Lancashire. 



