454 A HISTORY OF RECENT CRUSTACEA 
pigmented eyes. The only species is Pseudarmadillo cari- 
nulatus from Cuba or Mexico. 
Peryscyphis, Gerstaecker, 1873, has three species, Pery- 
scyphis trivialis, Gerstaecker, from an East African Lake, 
and two others from Egypt, for which at first Budde-Lund 
established a new genus Cercocytonus, which he cancels in 
the samevolume. The meaning of Vercocytonusis obscure. 
Probably Cercoxyténus was intended, meaning with acumi- 
nate tail. Peryscyphis was no doubt a misprint for Peri- 
scyphis, the name alluding to the convex form of the 
animal. 
Spheronscus, Gerstaecker, 1854, has small eyes, the 
second antennze short, with a three-jointed flagellum. 
The single species is Spheeroniscus jflavomaculatus, from 
New Granada. Budde-Lund thinks that Pyrguniscus cine- 
tutus, Kinahan, 1859, from Eastern regions, may pees to 
this genus. 
Cylléma, Budde-Lund, 1879, has very large picitedl 
eyes, the third joint of the first antenne very long, all the 
pleopods with tracheal opercula. The single species Cylloma 
oculatum is from New Zealand. 
Klima, Budde-Lund, 1879, has simple, minute eyes, the 
flagellum of the second antennze two-jointed, the opercular 
branch of the first and second pleopods tracheal, the ter- 
minal segment of the pleon subtriangular, the uropods 
reaching beyond this, but not beyond the postero-lateral 
angles of the preceding segment ; the outer branch of the 
uropods is flattened, laminar. The type is Hluma purpu- 
rascens, Budde-Lund, 1879, from Madeira, the Azores, 
Algeria, and Portugal. It is possible that this is synony- 
mous with the earlier Armadillidium ceelatum, Miers, 1877. 
Armadillidium, Brandt, 1833, has the flagellum of the 
second antennz two-jointed, the opercular branch of the 
first and second pleopods tracheal, the terminal segment of 
the pleon with the apex variable, not produced beyond the 
angles of the preceding segment, the uropods not reach- 
ing beyond the terminal segment. Budde-Lund describes 
thirty species, and names eight others attributed to this 
genus. Dollfus in 1887 adds five new French species, Simona, 
