180 
CRUSTACEA. 
events for 6 consecutive generations. The exceeding rarity of 
the c? in Artemia, the want of our knowledge of that sex in 
Limnadia, and the occurrence only in autumn of males of 
Polyphemus and Bythotrephes, lead the author to the conclu- 
sion that in these genera a similar parthenogenesis is a regular 
(not exceptional) occurrence, varying in the two last-named 
genera at fixed periods with bisexual propagation, whereas in 
Branchipus, Estheria, and Limnetis the males are to be found 
in sufficient number. Finally, the author supports LubbocVs 
opinion (Phil. Tr. 1857), that no distinct line of division can be 
drawn between eggs and buds. 
The spermatoids of Gammarus pulex described by Butschli, 
Z. wiss. Zool. xxi. pp. 415 & 533, pi. 40. fig. 7. 
Teratology. 
Hebklots describes some deformities in the claws of several Crustacea^ 
especially Xantho punctulata (Haan) and Eriphia spinifrons (Herbst), in 
which the movable finger is double or triple. Arch. N6erl. v. pp. 1-10, pi. 1 : 
cf. also Tijdschr. Ent. (2) v. pp. 09-78, pi. i. for a similar paper by this author 
on these species and Lithodes arctica (Lam.). 
Contributions to Faunas. 
Bock^s exhaustive paper on boreal and arctic Amphipoda 
(Overs. Dan. Selsk. 1870, pp. 83-278), mentioned in Zool. 
Rec. vii. p. 188, contains very valuable information on the geo- 
graphical distribution of the northern species, chiefly in Spitz- 
bergen, Greenland, and through the whole length of Norway. 
Observations on the abundance of several arctic species are given by Buch- 
holz, Erlebnisse der Mannschaft des Schiftes Hansa (Konigsberg: 1871), 
pp. 3, 4, 13, &c. 
The Norwegian Mysidce are the subject of a monograph commenced by Sars 
(see p. 185). 
A review of the Cypridinidce of the European seas is given by Brady, 
P. Z. S. 1871, pp. 289-295. 
The parasitic Copepods of Scandinavia are enumerated by Olsson, Act. 
Lund. V. 
62 species of Crustacea, observed at St. Malo and Boscoff, in Northern 
France, are enumerated by Grube, Mittheil. iib. St. Malo u. Eoscoff, pp. 64-66. 
15 species of Crustacea, including 6 Oirripeds, observed by Lafont near 
Arcachon, are enumerated. Act. Soc. L. Bord. xxviii. pp. 260-262. 
Some rare Crustacea found in Wirtemberg are indicated by Leydig, JH. 
Ver. Wiirt. xxvii. pp. 268-270; among them are Baphnella hrachyura 
(Lievin), Leptodora hyalina (Liljeborg), and Latona setifera, in the lake of 
Constance, Asellus camtieus, sp. n., in the cave of Falkenstein, and Argulus 
phoxini, sp. n., near Tubingen. 
Klunzinger’s life-like description of a coral-reef in the Red Sea treats, 
among other things, of the occurrence and habits of several Crustacea. Verb, 
z.-b. Wien, xx. pp. 389-394. 
