188 
CRUSTACEA. 
much the richest in individuals, but that the variety of forms 
becomes greater towards the south. One genus only, Acan- 
thostephia, is exclusively proper to the Arctie Sea; but several 
are hitherto only known from Norway, and others only from the 
British coasts. Only one species is exclusively proper to Green- 
land, and five to Spitsbergen ; all other Arctic species have been 
found also in Norway. Forh. Selsk. Chr. 1873, pp. 59-63. 
Numerous marine Copepods from the coasts of Southern Norway are 
described: Peltidium purpureum (Phil.) has been found there. Id. ibid. 
pp. 35-60. 
Several observations concerning the decrease in number of edible Crustacea 
are given by C. Spence Bate in his 4th Beport on the Fauna of South Devon, 
Rep. Brit. Assoc. 1872, and Q. J. Micr. Soc. (2) xii. p. 402. 
On the geographical distribution of the podophthalmous Ct'ustacea in the 
Bay of Biscay, cf. P. Fischer, C. R. Ixxiv. p. 1589. 
The distribution of the British Entomostraca is the subject of a paper by 
G. S. Brady. He distinguishes between species that are truly littoral, in- 
habitants of estuaries, and of brackish or subbraokish waters (the last, though 
fresh, being subject in some degree to tidal influence) [cf. Zool. Rec. vii. 
p. 191]. Some species are more northern, and others confined to the south 
or south-western shores of the United Kingdom, and altogether absent from 
the eastern coasts. Lists are given of species found in the freshwater lakes 
of Mayo and Galway, the east shore of Ireland, the north coast of Scot- 
land, South Wales and the Bristol Channel, Northumberland and Durham 
district, the Firth of Clyde, and Spitsbergen. A detailed table showing 
the distribution of all known species through the United Kingdom concludes 
the paper. Ann. N. H. (4) ix. pp. 48-70. 
The marine non-parasitic Copepoda of the north-east coast of England are 
reviewed, and several new genera and species described. Id. 1. c, x. pp. 1-16, 
pis. 2-6. 
22 species of Decapods, 21 of Amphipods and Lsemodipods, 7 of Isopods, 
14 of Copepods and Siphonostomes, 8 of Cirripeds, and 3 of Pycnogonids, 
observed on the shores of North Germany, are enumerated by A. Metzger, 
JB. Ges. Hannov. xxi. pp. 27-32. 
The terrestrial Isopods of Belgium have been enumerated by F. Plateau 
in Bull. Ac. Belg. (2) xxix. (1870), p. 112 ; Philougria [rectius Philygria'] 
riparia (Kinahan) added : id. ibid, xxxiii. (1872) p. 426. 
Bohemia. 12 species of parasitical Copepoda, 12 Cyclopidce, 7 Cypridre, 
32 Cladocera,' 5 Phyllopoda, 27 Omscidce, 2 Gammaridee, and 1 Astacus have 
been observed in l^hemia and are described, most of them also illustrated 
with woodcuts, by A. Fric, Arch. Landesdurchf. Bohm. ii. pp. 203-269. 
Black Sea. 9 species of Brachyura, 2 of Anomura, 7 of Macrura, 7 of 
Stomapoda, 38 of Atnpkipoda (including the Lsemodipods), 17 of Isopoda, 
7 of Brancliiopoda {Ostracoda), and 20 of Entomostraca (Copepods and 
Siphonostomes) are enumerated as inhabitants of the Black Sea by B. 
Ulianin. Tsvest. Obsh. Jest. Mosk. ix. pp. 68-79. 
Pontoporia qffinis (see Zool. Rec. viii. p. 181) and a few other Ci'ustacea, 
the species of which are not yet determined, have been found in the depth of 
