ISOPODA, PHYLLOPODA. 
215 
ASELLIDiE. 
Asellus, sp. n., described, without name, by Hilgendorf, MT. Ges. 
Ostas. V. p. 39, Yokohama. 
Asellopsis^ g. n. ; distinguished from Asellus by the want of mandi- 
bular palpi, and by the third joint of the peduncle of the antennulae 
being small and short, similar to those of the flagellum. Type, Asellus 
tenax (Smith), from Lake Superior. O. Harger, Am. J. Sci. (3) vii. 
pp. 601 & 602, and Ann. N. H. (4) xiv. p. 168. 
Oymothoidac. 
Scrolls hromleyana^ sp. n., found in the Antarctic Sea during the ex- 
pedition of the “Challenger;” Willemoes-Suhm, Z. wiss. Zool. 1874, 
p. xxvi. 
Bopyrid.®. 
Leptophryxus, g. n. ; male like that of Phryxus, female with rudimen- 
tary antennee, the segments of the body only distinct in the middle of 
the back, indistinct on the sides, 5 pair of thoracic feet, all very near the 
head, the last two segments of the thorax covered by large plates bear- 
ing the eggs. Abdomen small, conical, with traces of 5-6 segmental 
lines above, the foremost with smaller square plates. L. mysidis, sp. n., 
on Mysis oculata (F.), Sabine Island, E. Greenland. Buchholz, 1. c. 
pp. 287-294, pi. ii. fig. 2, larval stage, fig 2 d. 
Gyge hippolytes (Kroy.), descriptive notes ; id. 1. c. p. 286. 
Cryptoniscus larvaeformis \larvif-~\^ sp. n., male in the ovigerous cavity, 
female fixed to the base of the peduncle, of SaccuUna ; Northern Coast 
of France. Giard, C. R. Ixxix. pp. 241-243, and Ann. N. H. (4) xiv. 
pp. 386-388. 
BHYLLOPODA. 
A. S. Packard, Jr., in Hayden’s Ann. Rep. U. S. Survey, 1873 {^suprd^ 
p. 210], pp. 613-622, pis. i.-iv., gives a ‘ Synopsis of the fresh-water 
Phyllopo’d Crustacea of North America’ (north of Mexico), with a 
general outline of the structure, habits, affinities, and geological dis- 
tribution of the group, and especial notice of the instances of parthe- 
nogenesis recorded in it. The Nauplius of Branchipus (2 a) and of 
Apus (2 b) are figured, with Sida {Cladocera)^ fig. 1, for comparison, 
pi. i. Males of Apus lucasanus from Kansas are queried as properly 
referable to A. ccqualis^ with which they occur; no Apus has been found 
east of the Mississippi or in British Territory, and no Branchipus in 
the Pacific States ; and a new Estheria bears out the analogy of the 
Pacific coast fauna to that of Europe. The following are briefly 
described: — Estiieriidai: ; Limnetis (pi. ii. fig. 3), 2 species; Limnadia 
americana (Morse), pi. ii. fig. 4, L. {Eulimnadia^ apparently subg. n.) 
agassizi (sp. n., Packard, 6th Rep. Peab. Acad. 1874) p. 618, pi. ii. fig. 5, 
Massachusetts, and L. (JEJ.) texana (Pack.) ; Limnadclla hitei (Gir.) = 
coriacea (Hald.) ; Estheria calif ornica (sp. n., Packard, 1. c.), p. 618, pi. ii. 
