20 Moll. 
MOLLUSCA. 
of the latter belonging to Limncea), mostly collected near Tromso, by 
Schneider, with notes on the geological formation, enumerated by B. 
Esmark, in Tromso Mus. Aarsh. v. p. 98-d04. 
Norway. Esmark givos lists of the land and fresh-water Mollusks 
found in several parts of Southern and Central Norway, chiefly on liino- 
stone and clay-slate soil, with several interesting notes on varieties and 
individual variations, &c. ; N. Mag. Naturv. xxvii. pp. 77-110. 10 species 
of Pisidium observed from various localities, and 2 species of Sphcerium 
enumerated ; id. Mai. Bl. (2) v. pp. 1-6. 
3. British Fauna. 
Various localities of British land and fresli-water Mollusca mentioned, 
and specimens exhibited at the meetings of the Conchological Society at 
Leeds; J. of Conch, iii. pp. 282-286, 330-333, & 337-339. List of 
British Fresh-water shells, with localities, in the collection of the late 
R. Mac Andrew, by A. H. Cooke, l. c. pp. 380-384. 
Northern Scotland. Various land and fresh-water shells collected in 
Sutherland and Caithness by W. Baillie, J. of Conch, iii. pp. 297-299 ; 
II. arbustorum most common, often in company with II. hortensis ; II. 
ericetorum only in one locality ; Unio margaritifer , Naver, Brora, and 
Helmsdale rivers, &c. 
Yorkshire. On various forms of Anodonta , Unio, and Sphcerium , found 
in the Ouse and Foss, with relation to the quality and the current of the 
water; W. C. Hey, J. of Conch, iii. pp. 268-273. 47 species found at 
Birstwith, enumerated by F. T. Walker, l . c. pp. 275-277. 67 in the 
Lower Tees District by Charles Ashford, l. c. pp. 278-^281. 32 fresh- 
water and 42 terrestrial species from the neighbourhood of Beverley, by 
J. D. Butterell, l. c. pp. 289-296. 4 species of Sphcerium with 1 
variety, and 4 of Pisidium with 3 varieties, enumerated by J. Wilcock, 
l. c. pp. 327 & 328. Molluscan fauna of Somerdale, W. D. Roebuck, 
Yorksh. Nat. viii. pp. 52-55. 
Bristol. 107 species and 70 varieties enumerated by J. W. Cundall, 
J. of Conch, iii. pp. 260-267. 
Western Sussex , west of the River A run. 30 fresh-water and 49 
terrestrial species, including Helix obvoluta, enumerated by W. Jeffery, 
J. of Conch, iii. pp. 305-317. Twenty-five books or papers bearing on 
the land and fresh- water Mollusca of Sussex, the first dating 1840, enu- 
merated by W. D. Roebuck, l. c. pp. 318-320. 
4. Germany. 
North-Western Germany. F. Borciierding gives lists of land and 
fresh-water Mollusca found in various parts of Hanover, Oldenburg, 
Westphalia, and Eastern Friesland; Mai. Bl. (2) v. pp. 83-109. 
Liibeck. 51 terrestrial and 46 fresh-water species enumerated by C. 
Arnold, Arch. Ver. Mecklenb. xxxvi. pp. 1-13. 
Danzig. E. Schumann gives several additions and corrections to his 
