MOLLUSCA. 
443 
aro mentioned as being’ found on the shores of Sardinia b^ P. Gennari. 
Atti Soc. Ital. Sci. Nat. viii.^lSOG, pp. 328-33-5. 
The two Mediterranean genera Nea(sa and Lachesis (Kisso) have been 
examined by N. TinERi, Joiirn. Conch, xv. pp. G8-71 ; the INfediterrancan 
species of Odostomia, ibid. pp. 60-G8. The same author describes some new 
Mediterranean shells, ibid. pp. 179, 180, and a new genus, Gyriscus, ibid, 
pp. 6G-G0, which, however, is referred to Torinia by II. 0. Weinkauff. 
The Rissoce from Madeira and the Canary Islands have been examined by 
A. l\rANZ 0 NT. Of 23 species there is one previously known from those locali- 
ties, but not found elsewhere, R, canariimsis (Orb.) ; 8 are new, the re- 
mainder European species, mostly British. Journ. Conch, xiv. pp. 23G-26G. 
2. Exotic Seas. 
Japan. C. E, Lischke describes seven new species from .Tapan, Mai. Blatt. 
XV. pp. 218-222. — A. Adams enumerates the Japanese species of the families 
CmcidcB^ Corlmlidee, Volutidce, Cancellariidt^, and PateUidcp, Ann. &; Mag. 
Nat. Hist. ii. pp. -3G3-370. 
Pacijlc. W. Harper Pease describes new Polynesian shells. Am. Journ. 
Conch, iv. pp. 71-80, and points out the 83 ntion}miy of many species from the 
same seas, ibid. pp. 103-132. 
Mayellan Straits. A general account of tlie mollusks found in this locality 
is given by Dr. Rob. O. Cunningham, Naturalist to the Magellan-Straits 
Survey Expedition. Proc. Zool. Soc. 18G8, p. 18G. — Eleven new species 
from the same locality are described by R. A. Philippi, Mai. Blatt. xv. 
pp. 222-226. 
C. Immigration and Acclimatization. 
Helix adspersn (Midi.) and Rnlimus decollatns (L.) are said to have been 
introduced within historical times into France, and to have gradually spread 
over that country. Bourguignat in Moitessier’s Hist, malacol. du departe- 
ment de I’Hf^rault, p. 94. 
Helix adspersa (IMiill.) and pisana (Miill.) are supposed by Dr. Morch to 
have been introduced by the Romans into England, and II. pomatia (L.) by 
the same into the northern part of Germany. Journ. Conch, xvi. p. 350. 
Helix lactca (Miill.) acclimatized at Montevideo. Hensel in Mai. Bliitt. 
XV. p. 17G, and Strobel, Atti Soc. Ital. Sc. Nat. xi. p. 652. — H. adspersa in 
gardens of S. lago, Chile, and Umax variegatus (Drap.) at Buenos Ayres, 
Strobel, 1. c. 
Diplommatina huttoni (Pfr.) and Ennea hicolor (Hutt.) are two Indian 
shells, said to occur also in the West-Indian islands. The first is limited to 
the western part of the Himalayas, and it is desirable that the identity of 
the West-Indian form with that of the Himalayas should be confirmed. The 
second is widely spread, and its importation by the agency of man not im- 
probable. Blanford, Ann. & Mag. Nat. Hist. i. p. 110-112. 
Dreissena polymorpha (Pall.), found also at Heilbronn, Wiirttemberg, by 
Hr. Fr. Drantz; F. Krauss, Jahresh. Ver. vaterland. Naturk. W’^iirtt. xxiv. 
p. 44. — Its appearance in South-western France, 18G2 in the Canal du midi, 
18G3 in the canal at Agen, and 18G5 in the Garonne, is stated by Gassies, 
Journ. Conch, xvi. pp. 17-24. 
