192 
CttUSTACEA. 
Cyamus mysticeti from the Right Whale, monodontis, sp. n., from the 
Narwhal, boopts (ceti, 0. Fahr.) from Megaptera hoops, nodosus=:ceti (Zool. 
Dan.) from the Narwhal, and glohicipitis, sp.n., from the Grind whal (Olobiceps), 
are specifically distinguished, p. 280. 
ISOPODA. 
AsELLIDvE. 
Asellus cavaticus, sp. n., found in the cave of Falkenstein, Wirtemherg, 
shortly indicated by Leydig, JII. Ver. Wiirt. xxvii. p. 269. 
Asellus tenax, sp. n., Smith, Am. J. Sc. (3) ii. p. 463, Lake Superior. 
Cymothoid^. 
Heuklots (Arch. N4erl. v.) characterizes the following 2 new genera 
(indistinctly) and species ; — 
Epiehthys giyanteus, pp. 3-8, figs. 1-9, 95 millims. long. Probably from the 
Indian Archipelago. Nearly allied to Anilocra (Leach). 
Ichihyoxenus jelUnghausi, pp. 9^17. Parasitic on a freshwater fish of the 
family Cyprinidce, Puntius maculatus (Bleeker), in .Java. 
PHYLLOPODA. 
APODIDiE. 
Apus cancriformis and productus. The sexual differences and 
relations of these spp. have been the subject of careful researches 
by Von Siebold (cf. supra), who states that in the $ the trans- 
formation of the 11th pair of feet to egg-bearing organs, aceom- 
panied by abortive development of the gills, begins in indi- 
viduals in which the dorsal shield measures only 5 millims., 
whereas in the 6 the same pair of feet remains similar to the 
others, and that the sexes ean consequently be distinguished 
with certainty from that age by the mere inspection of this pair 
of feet. The males are stated to be somewhat smaller than the 
females. 
Apus lucasanus ( J and $ ), Kansas, rmvberryi, Utah, cpqualis ( cJ and $ ), 
Matamoras, and Mmalayanus (more nearly allied, by the length of the shield, 
to the European cancriformis than the other spp.), R. Sutlej, Himalayas, 
spp. nn. Packard, in^‘ Preliminary Notice of new North- American Phyllo- 
poda,” Am. Jouru, Sc. ii. 1871, pp. 109-111, and Ann. N. II. (4) viii. pp. 333- 
335. 
BRANCHIPODIDiE, 
Streptocephalus texanus, sp. n., id. Am. .Tourn. Sc. ii. 1871, p. 112, and Ann. 
N. H. (4) viii. p. 335, Texas. 
Artemia salina. Von Siebold {L c. pp. 197-210) maintains 
that this animal is by no means hermaphroditic, but the 
males are very distinguishable, though exceedingly rare, there 
being in some localities and seasons only females, which pro- 
pagate by parthenogenesis. The organ which was supposed by 
