CLADOCERA/ OSTRACODA. 
217 
Lago Maggiore. Observations on its breeding and development could 
not bo made. Z. wiss. Zool. xxiv. pp. 349-418, pis. xxxiii.-xxxviii. \cf. 
Zool. Rec. X. p. 193]. 
G. O. Saks has observed the development of this animal from the 
summer eggs without any metamorphosis, from the winter eggs by a 
remarkable metamorphosis, the larva being provided only with 3 pairs 
of limbs, first and second pairs of antennae, the latter already used as 
oars, and long mandibular palpi ; no compound eye ; only few traces 
of internal organs. The animals developed in this manner are always 
recognizablo by the single simple eye between the compound eyes. 
Overs. Dans. Sclsk. 1873, 15 pp. 1 ph 
LyNCEIDJ]. 
A synoptical view of the known genera given, and a new sub-family 
EurycercincB proposed for the only genus Eurycercus^ by Kurz, SB. Ak. 
Wien, Ixx. pp. 30-34. 
Camx>tocercus latirostris^ sp. n., id. 1. c. p. 35, pi. ii. figs. 9 & 10, 
Bohemia. 
Alonopsis latissima, sp. n., id. 1. c. p. 40, pi. ii. figs. 13-15, Bohemia. 
Alona. A synoptical table of the known species given, and A.pai'vula, 
iuherculata, elegans^ coro7iata, spp. nn., lineata (Fischer) and ohlonga (P. 
E. Muller), described ; id. 1. c. pp. 41-50, the new species figured, pi. ii. 
figs. 8, 3, 1, & 4-6. 
Leydigia, g. n. ; near A Iona, anal furrow provided on each side with 
numerous transverse rows of long spines, male with a flagellum on the 
first pair of antennoe. Lynceus quadrangularis (Leydig) and acantiiocer- 
coides (Fischer), the former described. Id. 1. c. pp. 51-53. 
Graptolehcris (Fischer), male and female described; id. l.c. 
pp. 54-56, pi. ii. figs. 11 & 12. 
Alonella. A synoptical table of the known species given, and A. 
cxigua (Lillj.), rostrata (Koch), and pygmcea (Sars) = transversa 
(Schodler), described ; id. 1. c. pp. 56-61, pi. hi. fig. 6, pi. ii. fig. 7, & 
pi. hi. fig. 7. 
Peracantlia truncata (Miill.) described ; id. 1. c. pp. 62 & 63. 
rieuroxus. A synoptical table of the known species given, and P. 
hasfatus (Sars), trigonellus (Miill.), (Jurine), and glaber (Schiidl.), 
described ; id. 1. c. pp. 64-69, the two former figured, pi. hi. figs. 3, 4, 
& 2, 5. 
Chydorus sphcericus (Miill.). Ephippium, males and copulation de- 
scribed ; id. l.c. pp. 71 & 72, pi. hi. figs. 9 & 10. C. ovalis, sp. n., 
id. 1. c. p. 73, pi. hi. fig. 11, Bohemia. C. (Baird) described ; 
id. 1. c. pp. 74 & 75, pi. hi. fig. 8. 
OSTRACODA. 
Cytheridjd. 
Xestoleberis labiata, sp. n., Brady, Ann. N. H. (4) xiii. p. 116, pi. iv. 
figs. 8-15, Scilly Islands. 
