262 



Kew : Lincolnshire Non-Marine Mollusca. 



Mr. J. W. Taylor has been made responsible for the deter- 

 mination of the shell-bearing- species and Mr. Roebuck for the 

 slug's. One must not omit to mention in this place the good 

 work done by Mr. C. S. Carter, of Louth, whose name is 

 associated with six recent additions to the county-fauna, viz. : — 

 Vertigo angustior and Vitrea lucida, collected by himself at 

 Somercotes and Welton Wood ; Pupa secale and Pyramidula 

 rupestris, collected by Mr. R. Worsdale and Mr. H. Preston 

 near Grantham ; Pisidium henslowanum, collected by the Rev. 

 E. A. Woodruffe Peacock and by the writer in the Ancholme 

 district ; and Paludestrina jenkinsi, collected by Mr. Carter at 

 Tetney and by the writer at Cleethorpes. 



As regards arrangement and nomenclature, the outline 

 classification here employed resembles that of Pelseneer's 

 'Introduction a l'Etude des Mollusques ' (1894); the genera 

 of Helicidce are those approved by Pilsbry in his ' Guide to the 

 Study of Helices' (1894); and the general arrangement of the 

 Pulmonata Stylommatophora is that of the same author's 

 ' Catalogue of the Land Shells of America North of Mexico ' 

 (1897-8). For the rest the list is largely based on the Con- 

 chological Society's catalogue of 1892; but valued hints have 

 been taken from the list appended by Kennard and Woodward 

 to their ' Post-Pliocene Non-Marine Mollusca of the South of 

 England' (1901). In all cases where a species figures as 

 a member of our fauna in Jeffreys' 'British Conchology' (1862-9) 

 the name used by that author is added in square brackets. The 

 world has moved apace since the publication of this delightful 

 work ; and in common with a large number of colleagues, the 

 present writer looks forward with confidence, and some im- 

 patience, to the time when the completion of Mr. Taylor's 

 'Monograph of the Land and Freshwater Mollusca of the British 

 Isles ' will furnish our conchologists with a modern text-book 

 and a uniform system of nomenclature. 



A. GASTROPODA. 

 I. — PROSOBRANCHIA. 



a. AS P I DO B RAN C H I A. 



NERITID.eE. 



x i. Neritina ftuviatilis (Linn.). [Neritina fluviatilis. ] 



b. PECTIN I BRANCH I A. 

 PALUDESTRINID^E. 



2. Paludestrina confusa (Frau.). [Hydrobia similis.] 



Naturalist, 



