102 BRITISH MOLLUSKS. 



Clausilia cordata, vulnerata, infulceformis, radicans, rostrata, and quad- 

 rata, Forster (1841), Nov. Act. Leop. vol. xix. p. 269. pi. lviii. f. 1 to 6. 



Clausilla (Ipklgena) biplicata, Moquin-Tandon (1855), Hist. Moll. vol. ii. 

 p. 337. pi. xxiv. f. 11, 12. 



Sab. Central Europe. Central and southern counties of England. Not in 

 Scotland or Ireland. (In woods and hedges, among the roots of shrubs.) 



This is the largest of the British Clausilice, the shell being more 

 acuminately convoluted and composed of a whorl more than the 

 preceding species. It may be recognized by its brown, rather ir- 

 regular, roughly wrinkled sculpture, marked at intervals next the 

 suture by faint patches of whitish hair lines. The localities of its 

 habitat are few in number, the chief being the banks of the Thames 

 in the neighbourhood of London. 



3. Clausilia Rolphii. Solph's Clausilia. 



Shell ; oblong-fusiform, semitransparent, fulvous brown, whorls 

 nine to ten, moderately convex, densely 

 striately wrinkled throughout ; aperture 

 obliquely subquadrately pyriform, lip 

 thinly callous, columella strongly two- 

 plaited, with sometimes two or three 

 fine intermediate marginal plaits. 

 Clausilia (IpUgenia) Molphii, Cray (1821), Med. 



Bepos. vol. xv. p. 239. 

 Clausilia Mortilletii, Dumont (1853), Bull. Sav. 



Soc. {fide Moq.-Tand.). 

 Clausilia plicatula, Forbes and Hanley (1853), Brit. Moll. vol. iv. p. 120. 



pi. cxxix. f. 3 (not of Draparnaud) . 

 Clausilia (Iphigena) BolpHi, Moquin-Tandon (1855), vol. ii. p. 343. pi. 



xxiv. f. 32 to 35. 

 Sal. Central Europe. Midland and southern counties of England. 

 (Among dead leaves, beneath the bark of trees, etc.) 



Clausilia Rolphii is scarce and not very generally known to col- 

 lectors. The only recorded habitats of the species in England are 

 Kent, Sussex, Hampshire, and Gloucestershire ; it has not been 

 found in Scotland, Ireland, or the Channel Isles. The shell is 

 smaller than that of C. biplicata, rather more ventricose in pro- 

 portion, and of lighter colour, more finely and delicately wrinkled. 



