276 
REPORT ON ZOOLOGY, MDCCCXLII : 
Podocerus, the male an Ericthonms. This genus must therefore be 
abolished. In the genus Anonyx, Kr., he has remarked, that in the 
male, the antennas are not only longer, but the inferior are even pro- 
vided with a number of small cuticular appendages, which probably 
serve for laying hold of the female in copulation. To this may be added 
A, appendiculosus, of which A. lagena is the female. The same relation 
is found in the above-named genera, Opis, Phoxis, and Ampelisca, and is 
also present in the Amphitoes ; so Amphitoe crenulata and inermis are 
male and female of the same species, &c. 
Hyperina. — Guerin (Rev. Zool. p. 214, t. 1, f. 1,) has made known a 
new genus, Cystisoma, with two triple-jointed antennas ; the first two 
pairs of feet small, terminating in claws, the other legs long, narrow, 
and flat, the fifth pair longest ; distinguished from Daira by the un- 
equal legs ; from Themisto by the want of the under antennas ; from 
Prinino by the claws on the fore pair of feet. The species, 0. Neptunus, 
of unusual size (3" 4'^'), comes from the Indian Ocean. 
Caprellina. — H. Goodsir (James. Edinb. N. Phil. Journ. xxxii. p. 
183, t. 3) has described four species of Caprella, observed in the Frith 
of Forth. C. spinosa, of the author, is distinguished from C. phasma, by 
the position of the spines on the central rings of the body ; C. tuberculata, 
is probably identical with Guerin’s species of the same name ; C. Iwvis, 
of the author, seems to agree with C. linearis, Hbt., and (7. linearis, of 
the author, must therefore be a new species. He appends some remarks 
also on their habits and internal structure. They live in deep water on 
coral reefs, are very deliberate and slow, sit upright as they fasten them- 
selves by the hind legs, and bring small animals to their mouth with the 
antennae. They often cast their skin. The alimentary canal is simple 
and straight, pulsating irregularly ; the long narrow ovaries at each 
side of the alimentary canal are also subject to this pulsation. They are 
each composed of a single row of eggs. 
ISOPODA. 
Asellota. — The genus Tanais, Edw., has been increased by Kroyer 
(Naturh. Tidsskr. iv. p. 167, t. 2) with a series of new species, viz. ; — 
T. Savignyi, from Madeira ; T. Edwardsii, ibid ; T. dubius, from Ba- 
hia ; T. gracilis, from Spitzbergen ; T. tomentosus, from the Norwegian 
Sea ; T. Oerstedii and T. curculio, from the Oresund. 
MYRIAPODA. 
“ Notes on Myriapoda” have been published by Walker (Entomol. 
p. 237, 293). They relate chiefly to the young state of several species, 
320 
