CLADOCERA. 
Crust. 40 
eyes. The genera Streblocerus, Acantholeberis, Ilyocryptus, Leydigia, 
Alona, PleuroxuSy section Rhypophilus, and Monospilus, come within this 
description. Z. wiss. Zool. xxx. suppl. pp. 393-396. 
Males and ef hippia in the females are sometimes found during spring 
and summer in the genera Daphnia, Ceriodaphnia, and ^imocephalus ; 
Lutz, SB. Ges. Leipz. v. p. 40. 
Observations on strange coloration in some Cladocera ; id. 1. c. pp. 39 
& 40. 
SiDIDiE. 
Sida crystallina (Moll.). Specimens from Lake Constance have rose- 
coloured, others from a small lake, “ Alpsee ” (Bavaria), blue, spots on 
the ventral side ; Weismann, 1. c. p. 128, pi. vii. figs. 4 & 4 A. 
Daphnella exspinosa, sp. n., Birge, Not. Cladoc. p. 3, pt. 2, figs. 1-4, 
Massachusetts. 
Latena setifera (Miill.), richly coloured ; Weismann, 1. c. p. 125, pi. vii. 
figs. 3 A-D. 
Holopedimn gibberum (Zaddach), ornamental colours ; id. 1. c. p. 131. 
DAPHNIIDiE. 
Daphnia Icevis, sp. p., and pulex (Geer), var. n. deniiculata ; Birge, Not. 
Cladoc. pp. 12 & 11, pi. ii. figs. 5-7, & pi. i. fig. 11, Massachusetts and 
Wisconsin. 
Daphnia brevicauda^ sp. n.. Chambers, Bull. U. S. Geol. Surv. iii. [1877] 
p. 154, Colorado. 
Daphnia obtusata, sp. n., Thomson, Tr. N. Z. Inst. xi. p. 261, pi. xi. 
fig. E 2, New Zealand. 
Daphnia hyalina (Leydig), var. n. muelleri^ — pellucida (P. E. Muller) ; 
Lutz, SB. Ges. Leipz. v. p. 37, Leipzic. 
Simocephalus americanus, sp. n., Birge, Not. Cladoc. p. 6, pi. i. fig. 9, 
“ everywhere common ” (Massachusetts and Wisconsin). 
Simocephalus intermediuSy sp. u., Studer, Arch. f. Nat. xliv. p. 106, 
pi. iii. fig. 1, Kerguelen Island. 
Ceriodaphnia dentata, consors, and cristata, spp. nn., Birge, 1. c. pp. 4-6, 
pi. i. figs. 1-4, & pi. ii. figs. 8 & 9, Massachusetts and Wisconsin. 
Scapholeberis nasuta, sp. n , and mucronata (Miill.) ? ; id. 1. c. pp. 9 & 
8, pi. i. figs. 8-10 & 7, North America (Massachusetts or Wisconsin). 
Macrothrix boergeni, sp. n., Studer, Arch. f. Nat. xliv. p. 108, pi. iii. 
fig. 2, Kerguelen Island. 
Ilyocryptus. Accurate description of the genus generally and of the 
three known species : sordidus (Lievin), agilis, sp. n., Kuttenberg, in 
Bohemia, and acutifrons (G. 0. Sars). Kurz, Z. wiss. Zool. xxx. suppl. 
pp. 396-410, pi. xviii. 
Lynceid.®. 
Eurycercus lamellatus (Miill.). Female only ornamentally coloured ; 
Weismann, 1. c. p. 135. 
