CLADOCERA, OSTRACODA. GriJst. 17 
J\foina flagellata^ sp. ii., id. 1. c. p. 39, Belo-Omut, Govt. Rjiisau, 
Central Russia. 
Daphnia longhpina^ Klunz., nec Miill., renamed similis, ? = atJcinsoni 
(Baird), Jerusalem and Egypt ; Claus, Z. wiss. Zool. xxvii. pp. 363 
& 364. 
Strcbloceras serricaudatus (Fischer, as Daphnia) = D. laticorniSj 
Fischer, 1849, nec Jurine, redescribed by Hudendorff, 1. c. p. 41, pi. ii. 
fig. 2. 
LyNCODAPHNIDiE. 
Ophryoxus paradoxurus, sp. n., id. 1. c. p. 43, pi. ii. fig. 1, River Wyg, 
near Archangel. 
Lynceid^. 
Eurycercus laniellatus (Miill.) : parts of the feet and branchial appen- 
dages of the fourth and fifth pair described by Hudendorff, 1. c. pp. 48 
& 49, pi. ii. fig. 3. According to him the description given by Gers- 
stacker is wrong in some points. 
Acroperus alonoides, sp. n., Hudendorff, 1. c. p. 51, pi. ii.fig. 4, Rjiisan, 
Central Russia. A. leucocephalus (Koch?) ; antennae described and a 
variety indicated; id. 1. c. p. 51. 
Alona inornata, iuherculata, and angusticaudata, spp. nn.. id. 1. c. 
pp. 53-55, pi. ii. figs. 5-7, Rjiisan. 
Pleuroxtis gracilis^ sp. n., id. 1. c. p. 57, pi. ii. fig. 8, Rjasan. 
PoLYPHEMIDAi. 
A. Weismann, in a paper on the formation of winter eggs in Leptodora 
hyalina, completes his former observations [see Zool. Rec. xi. p. 216] ; 
out of several germs, the origin and first growth of which are quite equal, 
only one comes to perfection as a winter egg, the others stopping in their 
development as soon as the available stock of nourishment is exhausted, 
and themselves becoming the food of the one remaining. Where only 
one germ is present, it is never fully developed into a winter egg, the 
surrounding nourishment not being sufficient. Z. wiss. Zool. xxvii. 
pp. 51-112, pis. v.-vii. 
OSTRAOODA. 
Cypris : larval stages discussed and figured ; CJaus, Untersuch. Crust, 
syst. pp. 28 & 99, with woodcuts. 
Asterope (Phil.). Its structure discussed, and the many differences 
from the rest of the Cypridinidce pointed out ; to this genus belongs also 
Cypridina oblonga (Grube), ? = Cylindroleheris teres (Norman) : id. 1. c. 
pp. 92-94, pi. xvii. 
Cypridina stellifera (Claus) and mediterranea (Costa) ; id. 1. c. p. 97, 
pi. xviii. figs. 1-6. 
General remarks on the shells of the Cypridinidce ; id. 1. c. p. 94, foot- 
note. 
1876. [voL. xiii.] G 2 
