aEOGRAPHlCAL DISTRIBUTION. 
Moll, 29 
h . Marine Mollusca. 
Some remarks on the importance of depth and temperature in the 
geographic distribution of Mollusca and the existence of universally 
distributed species ; R. B. Watson, J. L. S. xv. pp. 87-89. 
Some instances of “ circumtropical ” species, identical in the tropical 
parts of the Atlantic, Indian, and Pacific Ocean, but wanting in the 
colder seas, mentioned by E. v. Martens, Moll. Maur. p. 33G. 
1 . Arctic Seas, 
Barents Sea, Novaya Zemlya. 37 marine Mollusca collected by W. J. 
A. Grant, enumerated by W. S. M. D’Ukban, Ann. N. H. (5) vi. pp. 265 
& 266. 
1 species of Cephalopod {Ommastrephes illecehrosa), 16 species of marine 
Gastropods, and 8 of marine Bivalves, collected in Cumberland Sound, 
W. of Baffin’s Bay, by the Howgate Polar Expedition, enumerated by 
W. Dale, Bull. U. S. Nat. Mus. No. 15, pp. 145 & 146. The more 
remarkable are Crcnella faha (Fabr.) and Glijcymeris Jcurriana (Dunker). 
2 . Northern Seas of Europe. 
British Seas. Chiton scahridus, sp. n., Jelfreys, Ann. N. H. (5) vi. 
p. 33 ; and Rossia ov)eni (Ball), a mutilated specimen, picked up at Llan- 
dudno, N. Wales, E. A. Smith, tom. cit p. 398. 
Some sea and brackish water shells from the northern coast of Germany 
between the mouths of the Weser and Elbe, mentioned by Borciierding, 
Nachr. mal. Ges. 1880, pp. 24 & 25. They are all very common species. 
Sund. 88 species of Gastropods and 67 of Bivalves, observed at Helle- 
bak, by J. Colin, Faunula moll. mar. Hellebsekana (Nat. Tidskr. xii. 
pp. 415-464). 
Baltic. Short note on the marine Mollusca in the environs of Danzig. 
Cardium edule, Mytilus edulis, Mya arenaria, and Tellina haltica, all of 
dwarf size, are the only true marine species ; Hydrohia haltica and Neri- 
Una fluviatilis live here also in the sea. Schumann, in “ Danzig in natur- 
wissenschaftlicher und medizinischer Beziehung,” 1880, pp. 94 & 95. 
Note on the littoral zones on the coast of S.W. France ; 1, region sub- 
terrestre, or Littorines ; 2, Balanes ; 3, Patelles ; 4, Hermelles ; 5, Pho- 
lades ; by P. Fischer, J. de Conch, xxviii. p. 85. 
List of sea shells collected at He d'^Yeu, by G. Servain, in a separate 
pamphlet (Angers : 1880, 56 pp.), not seen by the Recorder. 
Bay of Biscay. 192 species of deep sea Mollusca, dredged by the 
French expedition of the ‘ Travailleur,’ 1880, enumerated by J. Gwyn 
Jeffreys, Ann. N. H. (5) vi. pp. 315-317, & 374 & 375 ; and by A. Milne- 
Edwards, C. R. xci. p. 355, footnote, also Rep. Brit. Ass. 1880, pp. 383- 
387. Some new species are named, but not described. 
