16 Orust, 
CRUSTACEA. 
BRANCHIOPODA. 
A. Gerstacker has published a new part (21) of his general treatise 
on the Crustacea\i\i\Q supra, p. 1], discussing the development of Cypris, 
Argulus, Daphnia, and other Cladocera, Limnetis, Estheria, Limnadia, 
Artemia, Branchipus, and Apus ; and giving an historical review of the 
classification proposed by different authors for these animals, which he 
comprehends in one order, Branchiopoda. 
PHYLLOPODA. 
BRANCHIPODIDiE. 
Branchipus australiensis, sp. n., F. Ritchers, J. Mus. Godelfr. xii. 
pp. 43 & 44, pi. iii. Peak Downs, E. Australia, 300 miles inland. 
Artemia salina (L.) and muehlhauseni (M.E) : W. J. Schwan- 
kowitsch’s observations [Zool. Rec. xii. p. 228] extracted in Ann. N. H. 
(4) xvii. pp. 256-258. 
LlMNADIIDiE. 
Estheria ticinensis (Crivelli), larva ; Claus, Untersuch. Crust, syst. 
p. 101, pi. xix. figs. 1 & 2. 
Lymnetis \_Limn~'] brevifrons, sp. n., Packard, Bull. U. S. Geol. Surv. 
ii. p. 172 (with woodcuts representing distinctive characters of several 
species), Kansas. 
CLADOCERA. 
Claus makes many interesting observations on the structure of the 
Cladocera, especially of Daphnia, but comparing that of other genera ; 
he describes the nerves of the eye, cervical organ, and feelers, the 
ventral chain of ganglia, the muscles of the oesophagus, the intestine, 
the. peculiar “organ of fixation” (haft-organ) in the neck, which he 
thinks to have an excretory function, at least in the genus Sida, the 
heart, which he finds always provided with two lateral venose slits, the 
ovarium, the formation of the eggs, &c. Z. wiss. Zool. xxvii, pp. 
362-402, pis. xxv.-xxviii. 
Sididj:. 
Sida crystallina (Mull.). The number of natatory bristles in the 
second pair of antennae is variable ; Hudendorff, Bull. Mosc. 1. p. 29. 
Daphniid^, 
Ceriodaphnia quadrangula (Miill.). Ephippium and male specimens 
described ; id. 1. c. p. 38. 
