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120 MOLLUSCA.
species systematically, with full citations and indication of localities.
The occurrence in alluvial and diluvial deposits in Germany
is also indicated. 48 genera and 347 species of land and
freshwater Mollusca are enumerated. This book, worked out
with great care and zeal, will prove very useful to every one
who is interested in the geographical distribution and literature
of the European extramarine Mollusca. [A few remarks by the
Recorder will be found in the Nachr. mal. Ges. ii. pp. 99-102
and 110-117.1
E. vox MARTENS has continued his arrangement of the literature
bearing on the distribution of the German Mollusca (Zool.
Rec. v. p. 521), treating of the middle and northern parts of
Germany beyond the system of the Rhine. Nachr. mal. Ges.
ii. pp. 3, 17, 33, 65, 12i, 137, 153.
E. v. MARTENS calls the attention of the German conchologists to the
geographical distribution of certain land-sheUs. Cyclostoma elegans (Miill.)
is found along the Rhine and in some parts of the system of the Weser, and
even along the little river Unstrut; but is wanting to the east and southeast
of this region, except in a little area on the slope of the Austrian Alps
towards Hungary. This species is very often accompanied by Helix caHusiaua,
Miill, the distribution of which, however, is somewhat more restricted
in the western and more extended in the south-eastern district.
Helix bidens (Chemn.), on the other hand, is common throughout Germany
eastward of a line going from Hamburg to Augsburg; westward of this line
it is found in diluvial deposits only, and is wanting in the greater part of the
Alps. It is suggested that agriculture acts in a directly opposite manner on
these two species. Azeca menkeana (0. Pfr.) occurs in Germany, with the
latter, in the central parts of the systems of the Rhine and the Weser, but is
quite absent in Southern Europe. Nachr. mal. Ges. ii. pp. 157-160,169-172,
and SB. nat. Fr. 1870, pp. 57-59.
Couvland. 55 species of land and 52 of freshwater mollusca are enumerated
by F. H. KAWALL, Ann. mal. Belg. iv. (1869) pp. lxviii-lxxv.
Pomcvania. LEHMANN enumerates 115 species of land and freshwater
mollusca living in this province ; among the more remarkable are H. vindoboncnsis
(austriaca), acclimatized by II. Dohrn, Helix lamellata, bidens, incarnata
(but no peisonata or obvoluta !), Bulimus tridens, obscurus (no montauusl),
Clausilia ventricosa, plicatula, nigricans, plicata, similis, cana, laminata,
Planovbis acies, discoides, Amphipepleu glutinosa, &c. Mal. Bl. xvii.
pp. 94-98.
Mavk-Brandenbuvg. Cyclas solida (Normand) and Pupafrumentum (Drap.),
found at Oderburg, are added by Dr. REINHARDT and the RECORDER. Friedel,
Zool. Cart. 1870, p. 387.
Ilambuvg. The land and freshwater shells of the environs of Hamburg,
Lubcck, Kiel, and some parts of Ilohtcin and Sleswich are reviewed from
new observations by E. FRIEDEL. llgalina excavata (Bean), hitherto only
known as British, found near Gluckslacl in Sleswick; Cyclas pisidioides
(Gray) on the island of Fohr. Mal. Bl. xvii. pp. 36-71.—Some additions
concerning llgalina subtevranea (P.ourg.), Livmceus glaber (Miill), and I.
silesiacus (Scholtzj are given in Nachr. mal. Ges. ii. pp. 97, 08.—C. WESSEL