Species of Inland MoUusea. 175 



the case with the Belgian var. ruhra^ as Miss Leigh writes : — 

 " I observed three red slugs, two in one path and one in 

 another, in a wood outside and some way above the town. 

 The paths were a short distance from a stream, but them- 

 selves very dry, full of stones and slate, surrounded by grass, 

 heather, and bushes." My brother (S. C. C.) has also taken 

 the brick-red variety at Kouen. 



Succinea vitrea, Jefifr. 



This species was first described as 8. putris, var. vitrea *, 

 by Gwyn Jeffreys, who subsequently identified it with More- 

 let's S. virescens f, and it has since been known under the 

 latter name to British conchologists. As a species I think it is 

 at least as distinct as most others of the genus ; but it seems 

 extremely doubtful whether our form is Morelet's S. virescens^ 

 since the figure of that species given by Eiobelt (Rossm. Icon, 

 fig. 2088) belongs evidently to a variety or subspecies of 

 S. Pfeifferi. Baudon's S. debilis closely resembles our species 

 in shape, but it is much smaller, and appeal's also to belong to 

 the Pfeifferi-stciion of the genus. It therefore becomes neces- 

 sary, since neither Morelet's virescens nor Baudon's debilis 

 belong even to the same section of the genus, to adopt for 

 our species Jeffreys's name vitrea^, the characters being a short 

 and blunt sjjire, shallow suture, large aperture, and the ex- 



•j 

 Succmea vitrea, JetFrey.-t. 

 1. Wre.ssle, Yorks. 2. Var. aurea: Clonmel. 



tremely fragile and thin texture of the shell. The typical 

 form of the species is pale greenish and transparent, sometimes 

 inclining to pale brown ; but a variety which I call aurea occurs 

 near Clonmel in Ireland, and is of a beautiful translucent 

 amber colour. 



* ' British Concliologv,' vol. i. p. 152. 



t Ann. & Mag. Nat. Hist. Nov. 1878. 



t (S. vitrea baa been recorded from tbe following counties in Britain : — 

 Kent, Surrey, Middlesex, Warwick, Herts, Hants, Worcester, Sussex. Car- 

 marthen, Tipperary, and Cork; aud I have recently received it fiom 

 Yorkshire, which is the most northern locality at present known. 



