41 Crust. 
CRaSTACEA. 
Alona acanthocercoides (Fischer): male described; Lutz., SB. Ges. 
Leipz. V. p. 41. 
Alona angulata, porrecta, a.nd glacialis^ spp. nn., Birge, Not. Cladoc. 
pp. 28-30, the two former pi. i. fig. 16, & pi. ii. fig. 16, Massachusetts. 
Alona weineckij sp. n., Studer, Arch. f. Nat. xliv. p. 108, pi. iv. figs. 3 
& 4, Kerguelen Island. 
Alonopsis media^ sp. n., Birge, 1. o. p. 32, pi. i. figs. 14 & 15, North 
America. 
Graptoleberis inermis, sp. n., Birge, 1. c. p. 26, pi. i. fig. 17, Wisconsin 
and Massachusetts. 
Pleuroxus procurvus, straminius [-eusl^ insculptus, unidens, hamatus, 
and acutirostris, spp. nn., id. 1. c. pp. 16-23, pi. i. figs. 19-22, & pi. ii. 
figs. 11-15, Massachusetts. 
Pleuroxus wittsteini, sp. n.. Studer, Arch. f. Nat. xliv. p. 109, pi. iv. 
figs. A & B, Kerguelen Island. 
Chydorus minutus, sp. n., Thomson, Tr. N. Z. Inst. xi. p. 262, pi. xi. 
fig. E 3, New Zealand. 
CrepidocercuSj g. n. Head immovable, rostrum sharp, short ; antennae 
bearing eight setae and three spines ; post-abdomen shoe-shaped, much 
compressed laterally, bearing numerous bristles scattered somewhat irregu- 
larly over its surface ; ventral margin of the valves fringed with some- 
what long plumose setae. C. sctiger, sp. n., Wisconsin : remarkable by 
the extreme suddenness of its movements ; Birge, 1. c. pp. 24-26, pi. i. 
fig. 18. 
Copechcete, g. n. Shell oval-oblong, rounded behind, without large 
spines ; no eye-spot before the eye ; thoracic feet fiat, armed with strong 
claws and long divergent bristles ; in other respects allied to Bosmina. C. 
elongata, affinisy fissa, awd armoricanay spp. nn., Brest, in the sea, found 
below stones and in the stomach of fishes. The author thinks that they 
will form a new family, “ Copechetiens.^' Hesse, Ann. Sci. Nat. (6) vii. No. 15, 
20 pp., pi. 12. 
POLYPHEMIDJ]. 
Polyphemus oculus (Miill.), ornamental colours ; Weismann, 1. c. p. 133, 
pi. vii. fig. 2. 
Bythotrephes longimanus (Leydig), ornamental colours ; id. 1. c. p. 132, 
pi. vii. fig. 1. 
OSTRACODA. 
Brady’s monograph of the Ostracoda of the Antwerp Crag, Tr. Z. S. 
X. pp. 379-409, pis Ixii -Ixix., may be mentioned here, as most of the 
genera and several species are still living. 
Cypris grandis. altissima, and monSy spp. nn.. Chambers, Bull. U. S. 
Geol. Surv. iii. [1877] p. 151-153, Colorado. 
Cypris ciliatay viridiSy littoralisy spp. nn., Thomson, Tr. N. Z. Inst. xi. 
p. 253, pi. xi. figs. A 1-3 & B 1, New Zealand, the two former in fresh, the 
last in brackish water. 
