300 
ZOOLOGICAL LITERATURE. 
tiarum Upsaliensis, vol. iii. 1862. In this he gives an interesting account of 
the genus Liriope of Rathke, from tlie first discovery of the parasite by 
Cavonelli in 1787, who described it under the name of Oniscus squilliformis, 
until the present time; and his reasons for not including the genus in the order 
of Amphipoda as proposed by Rathke, but placing it in that of Isopoda, 
as Dana had done, though not in the family of the Tanaidse as the last author 
has proposed, but in that of the Bopyridje. He characterizes the genus, and 
describes the species Liriope pygmmij Rathke, 
ENTOMOSTRACA. 
APODIDiE. 
Mr. John Lubbock (Trans. Linn. Soc. vol. xxiv. p. 197), among 
some new or little-known species of Freshwater Entomos- 
traca,^^ has given a description of Lepidurus productus, which 
he captured in some nearly dried-up pools of stagnant water in 
a gravel-pit at Pont de FArche, near Rouen, lliis fortunate 
circumstance has enabled him to describe the hitherto unknown 
male of this species, which he states may be distinguished from 
the female in the same manner as that of Apus cancriformis. 
In general form there is no apparent difference ; but the eleventh 
pair of legs, which in the female is specialized into an egg- 
holder, remains in the male of the usual type. He also discusses, 
and we think successfully combats. Prof. Dana^s hypothesis as to 
the development of the large number of somites of which the 
animal consists. 
Dr. Klunzinger (Zeitschr. fiir wiss. Zool. Band xiv. p. 139) 
has given a very full and interesting description of a specimen of 
Limnadia which he found in some slightly brackish pools in the 
suburbs of Cairo, formed by drainage or percolation of the 
waters from the Nile through the mud upon its banks. 
All the specimens which he took, with but a single exception, 
were males. The animal in some features coincides with Dana's 
description of Cysicus, especially in the prominent beak-like 
head ; but it has 22 instead of 21 pairs of foliaceous appendages, 
although Dr. Klunzinger thinks that it is just possible, from 
the difficulty of counting, that he may have enumerated one pair 
too many. But in the presence of the protuberance on the 
dorsal surface it agrees with Brongniart's description of Lim- 
nadia, although the protuberance is not so large or conspicuous as 
that figured by Milne-Edwards in his ^ Histoire des Crustaces.' 
Dr. Klunzinger gives the specific name of gubernator to the 
animal. As the author has some hesitation in fixing the genus 
to which it belongs, it may be desirable to give a short descrip- 
tion of the animal itself. 
The sides of the animal are compressed, and the back distinctly segmented. 
The body is of a brownish-red colour, and enclosed in a bivalve shell that is 
