MOLLUSCA* 
503 
IL cdrascalenm are the most characteristic species ot the regioh, ftSdelidiiig 
higher than the woods, the first rather gratninicole,” the other lititig oli 
rocks. Piqm megachilos (Rossm.) = higorriemis (Charp.) common to a 
height of 1800 metres. Clausilia laminata (Mont.), duhia (Drap.), and a&^e- 
tina (Dupuy) in the region of beeches, 1200-1500 metres ; Cl. duhia, but not 
Cl. ahietina, found somewhat higher, to a height of 1600 metres. Ancylus 
gibhosus (Bourg.) common. liydrdhia reynesii (Dupuy) on stones and peb-^ 
bles in springs and rivulets^ Pisidium casertanum (Poli) common in one 
place, 1350 metres high. No Nerkina could be found) neither the Zonites 
olMorum^ which latter is mentioned by Saitlcy \ but instead of this five 
other species of Zonites \_IIyalina'] were discovered. 
Southern France. Some rather rare mollusks of the ddpartenient dit II^- 
rault (Montpellier) are mentioned by Paladilhe, Revue Zool. pp. 42-63, as 
Testacellahisulcata (Risso), Succinea ochracea (Betta), Zonites glaher (Stud.), 
Helix cemenelea (Piqqo) =galloprovincialis (Bourg.), H. lauta (Lowe) = 5 ^< 6 - 
maritima (Desmoul.), H. amhielina (Charp.), II. trochlea (Pfr.), Planorhis 
Icevis (Alder), Physa suhopaca (Lam.), Amnicola confusa (Frauenfeld), and 
some new species of Ilydrohia^ Paladilhia, and Valvata. 
All the mollusks of the same department are enumerated by Moitessibr ; — 
Arion 3 sp., Limax 4, Milax 1, I'estacella 2, Vitrma 1, Succinea 5, Zonites 11, 
Helix 42, Pulimus G, Ferussacia 8 , Clausilia 5, Pupa 14, Vertigo 7, Ccecili~ 
anclla 4, Carychium 2, Alexia 1, Planorhis 17, Physa 4, Limncea 8 , Ancylus 
Moitessiei'ia 3, Cyclostoma 1, Pomatias 2, Acme 1, Vivipara 1, Bithynia 1, Hy- 
drohia 12, Amnicola 3, Bugesia 1, Paladilhia 6 , Valvata 6 , Neritina 3, Sphee-^ 
rium 3, Pisidium 6 , Unio 4, Anodonia 4, Dreissena 1. Revue Zool. pp, 101- 
446. 
Grecian archipelago. Fifteen species of Helicidce occurring on the Island 
Tinos (two of them new, but not described) are enumerated in a general 
account of this island by Joseph Erbeh, Verhandl. zool.-bot. Gesellsch, 
xvii. p. 855. Remarkable among them are Pomatias tessellatus (Andr.) and 
Glandina atgira. 
Migration and Acclimatation. 
Preissena jluviatilis (Pall.) appeared in 1804 in the Loire 
near Orleans and Tours, and recently at Nantes, and in some smaller streams 
of France, and in October 1865 in the Rhone, near Avignon. J, Mabille, 
Journ. Conch, xv. pp. 108-110. P. Fischer adds some other particulars, 
referring its appearance in the D^partement du Nord to the year 1838, in the 
Scarpe and Canal de la Deule to 1844, in the Rhone to 1866 [P], and in the 
Garonne to 1866. Ibid. pp. 110, 111. The same Preissena polymorpha has been 
observed in the kingdom of Wiirtemberg in the river Neckar at Heilbronn, 
by M. Drauitz, in the spring of 1867. Wiirttemb. naturwiss. Jahreshefte, 
vol. xxiv. (1868) p. 44. 0. A. L. Morch persists in doubting whether this 
mollusk had not been living in Germany before 1820, regarding Sander’s note 
(see Record for 1865, p. 217) as a sufficient proof. Ann. & Mag. Nat. Hist. 
Febr. 1867, xix. pp. 82-84. 
Helix vermicidata and [heucochrod] candidissima are said to have been suc- 
cessfully acclimatized at Jaulyonne, in Belgium, by Ch. Lalleniant, Annul. 
Soc. Malacol. Belg. ii. pp. 13, 14. The acclimatation of H. lactea, however, 
in Perpignan, Southern France, as stated by Moquin-Tandon, is contradicted 
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