53 Crust. 
CRUSTACEA. 
distributed in the tropical and southern seas ; Brady, 1. c. pp. 164-167, 
pis. xxxix.-xlii. 
Cytherellid^. 
Cytherella lata, Atlantic and Oriental Seas, 155-675 fath., dromedaria, 
Simon’s Bay, S. Africa, 15-20 ta,ih.. ,venusta, Honolulu, 40 fath., cribrosa, 
Tongatabu, 18 fath., irregularis, Bermudas, 435 fath., and latimarginata, 
Torres Straits, 155 fath., spp. nn., and several other published species, 
Brady, 1. c. pp. 172-178, pis. xxvi., xliii, & xliv. 
COPEPODA. 
G. H. Brady gives a general outline of the external and internal struc- 
ture of the free and semiparasitic Oopepods, chiefly from the works of 
Claus, Gegenbaur, and Huxley, in vol. hi. of his Monograph of the 
British Copepoda, pp. 1-22. He supports Thorell’s division of the Cope- 
poda into Gnathostoma, Pcecilostoma, 2 iXidi Siphono stoma, against Claus, but 
agrees with the latter in the interpretation of the mandibles, pp. 25-29. 
The same author, in vol. ii. of his Monograph, discusses the Barpacticidce, 
81 species of which are described and figured ; the third, which concludes 
the work, contains some general considerations, and 19 lower semipara- 
sitic species {OorycceidcB, Lichomolgidce, Ariotrogidce). 
C. Vogt has made some general remarks upon the adaptation of the 
Copepoda to parasitic life, coming to the result that the Chondracanthidoi 
may be derived from the Ergasilidce. Act. Soc. Helv. lx. [1878] pp... 
121-139. 
A. della Valle enumerates 70 species of parasitical Copepoda, with full 
synonymy, and 66 species of fishes on which they have been observed, 
from the Adriatic Sea. Boll. Soc. Adr. vi. pp. 55-90. 
ARQULID.E. 
Argulus schizostethii, sp. n., Kellicott, Am. J, Micr. v. p. 53, on the 
head of the blue pike, Schizostethium salmoneum (Jord.), in Niagara 
river. 
Cyclopidji. 
Cyclops. 21 species observed near Bremen, and described, including 
hyalinus, hisetosus, pygmceus, poppii, spp. nn., and the synonymy of some 
others rectified ; H. Rehberg, Abh. Ver. Brem. vi. pp. 538-550, pi. vi. 
Cyclops helgolandicus, sp. n., id. Zool. Anz. iii. p. 302, Heligoland, in a 
well ; abstract in J. R. Micr. Soc. iii. p. 635. 
Cyclops fontinalis, sp. n., Gottingen ; helgolandicus (Rehb.), from a 
well in Heligoland, very near pulchellus (Koch) ; affinis (Sars) in its 
development somewhat distinct from the other species ; C. fimhriatus 
(Fischer), poppii (Rehberg), and phaleratus (Koch) are closely allied ; C. 
agilis (Koch) = longicornis (Vernet) ; and some other notes on the 
