400 A HISTORY OF RECENT CRUSTACEA 
Erythrops microphthalma, Sars. Eggs few and large. 
Upon this species Giard and Bonnier have found a para- 
sitic Copepod, which thus retaliates upon the Isopods that 
are parasitic on Copepoda. 
Notophryxus, Sars, 1882. The animals are attached to 
the back (or side) of the host. In the female the body is 
symmetrical, a little depressed, imperfectly segmented, 
the first antennz are laminar, the five pairs of feet are 
small, incompletely articulated, and crowded into a narrow 
space on either side of the mouth. The pleon is without 
appendages. The male has the pereon clearly segmented, 
with the full number of appendages, the pleon unseg- 
mented, without appendages. 
No tophe yaus ovoides, Sars, 1882, on Amblyopsis abbre- 
viata, Sars. 
Notophrycus clypeatus, Sars (1880), on Pseudomma 
roseum, Sars. 
Notophryzus lateralis, Sars, on Nematoscelis megalops, 
Sars. This is thought likely to become the type of a new 
genus. 
Notophryzus globularis, Sars, 1885, on Thysanoessa gre- 
garia, Sars. 
Heterophryxus, Sars, 1885. The animals are attached 
to the back of the host. The female has the back pretty 
distinctly segmented, the five pairs of feet distant from 
one another, and the fifth pair remote from the rest, di- 
rected backwards, bifurcate ; the pleon rudimentary, with 
the male adhering to this rudiment. 
Heterophryxus appendiculatus, Sars, 1885, on Euphausia 
pellucida, Dana. 
Family 4,—Calbiropside. 
They are parasitic on [sopoda and Amphipoda. 
Cabirops, Kossmann, 1884, for Cabira, Kossmann, 1872, 
preoccupied, is described as having ‘ 8-9 distinct segments, 
divided by a chitinous lamella into dorsal and ventral 
halves; mouth in the ventral part of the first segment ; 
pouch-like appendages of the single segments filled with 
embryos’ (‘ Zool. Record,’ 1872). 
