.MOLLU SCA- 
BS! 
tlio opinion of the Recorder, viz. that this species was originally East-Indian, 
and transported by the agency of man to America. Preuss. Exped. Ost-As. 
ii. p. 271,] 
Dreissena polymorpha (Pall.) mentioned in Hungary as early as 1794 by 
Gressinger, Martens, Mai. Blfitt. xvi. p. 84; found in Silesia, in the Lake of 
Brandschiitz, Fiedler, 42nd Bericht d. schlesischen Gesellsch. f. vaterland. 
Oultur, p, 62 ; has appeared in great numbers in the river Neckar at Eberbach, 
Seibert, Nachrichtsbl. mal. Gesellsch. i. p. 101. 
Dreissena pohjmorpha (Pall.) kept alive for ten weeks in an aquarium. 
Fiedler, 42nd Jahresbericht der schles. Gesellsch. f. vaterlandische Cultiir, 
p. 62. 
Grypheva angidata (Lam.) transported from Cadiz to Arcachon. P. Fischer, 
Act. Soc. Linn. Bord. xxvii., and Journ. Conch, xvii. p. 300. 
Prof. Stabile has published his experiences on snails kept in confinement, 
especially on IleUx nautiliformis, Bull. Mal. Ital. ii. pp. 105-108. — G. Sterr 
has published notes on the same subject, Nachrichtsbl. mal. Gesellsch. i. pp. 
34-36. 
IIeynemann gives instructions for transporting living specimens of Limax 
in moss. Nachrichtsbl. mal. Gesellsch. i. pp. 168-109. 
A few observations on breeding some Algerian land-shells, especially 
Helix punctata (Mull.) vmdi II. hicroglyjjhicula (Mich.), are ptiblished by Prof. 
Troschel in Verhandl. d. naturhist, Vereius d. Preuss. Rheinlande, Bonn, 
xxvi. 1869, Sitzungsberichte,” pp. 211-213. 
Clausilia olivieri (Roth) breeding in confinement. A. Sporleder, Nach- 
richtsbl. mal. Gesellsch. i. p. 182. 
J. B. G ASSIES, in his pamphlet, ‘Fails biologiques de rAquarium d’eau 
douce de TExposition Universello de 1867,’ Bordeaux, 1868, 8vo, 17 pp,, 
treats also of tlio life of some Mollusca in confinement. 
e. Palaeontology of Recent Species. 
Several of the more common European freshwater shells have been found 
in the plastic cla}', called “tock,” of the island of Heligoland. Lasard, Zeitschr. 
d. deutschen geolog. Gesellsch, 1869, xxi. p. 581. 
Helix feetens [which, at present, is found in a living state in the Alps only] 
has been found in subfossil specimens near Rudolstadt, in Thuringia, by 
Dufi’t, Nachrichtsbl. mal. Ges. i. p. 49. The differences between living and 
fossil specimens pointed out by Kobelt, ibid. pp. 181-183. 
Several land- and sea-shells found in caves and breccias of the Apuan hiUs 
(near Carrara), which have been used by primeval men as food or ornaments, 
are alluded to by Dr. C. Regnoli, Bullett. Malacol. Ital. ii. p. 3L 
Neritina Jluviatilis (L.), var. areolata, in upper tertiary deposits of Central 
Italy. C. d’Ancona, Bullett. Mal. Ital. ii. p. 44. 
The occurrence of several North- American land-shells in the postpliocene 
of the Mississippi valley is mentioned by Binney & Bland in their work on 
the land-shells of North America, mentioned above. 
On marine shells in stratified drift near Macclesfield, see R. I). Darbishire, 
Mom. of the Literary and Philos. Society at Manchester, 3rd series, vol. iii. 
1868. 
Some subfossil shells found in the “ Kjokkenmoddinger,” on the west coast 
of Schleswig, enumerated by IC. Friedel, Mal. Bliitt. xvi. pp. 68, 69. 
