228 Analyses of Books. [Marcu, 
Janira,;* a new and curious genus, whose antenne are inserted 
in the same horizontal line, the interior ones with two sete, the 
anterior pair of legs alone didactyle. Sp. 1, Periculosa, pl. 3, f. 1. 
The thorax is formed of transverse imbricated plates (or, as we 
should suppose appears to be so). He has placed it with the homar- 
diens. It isa solitary species, and lives in deep water amongst the 
rocks, It is taken with difficulty; is said to swell like a bug, and 
to cause a pain in the stomach when eaten. ‘The front is terminated 
by a spine, the wound of which is supposed to be very venomous. 
It is eaten by fish, in whose stomachs it has been found. 
Thalassina littoralis, pl. 3, f. 2. This seems to be cancer stel- 
latus of Montagu, and belongs to the genus gebia of Leach. The 
genus thalassina (Lutr.) is confined to the Indian Seas. Gelia is 
found in the Red and Mediterranean Seas, and European Ocean, 
burrowing beneath the ground at the bottom of the sea, and making 
long subterraneous passages, like a mole. Its body is covered with 
‘a soft crust, and is used in the Mediterranean as bait by the 
fishermen. 
Nika, which is the same with the genus processa (Leach), is an 
animal of very singular conformation, one anterior leg being didac- 
tyle, the other monodactyle. Risso has described three species 3 
one of which is sold at Nice during the whole year as food. 
Egeon, a new genus allied to palemon (the prawn), from which 
it differs in having no rostrum, and the anterior pair of legs mono- 
dactyle. He describes one species which is figured by Olivier. 
(Zool. Adriat. t. 3, f. 1. It is eatable, and has a worse flavour than 
the prawns. 
Under the title palemon he has described several species of a 
new genus; whilst under the generic name of /ysmata he has de- 
scribed and figured one genuine paleemon. 
Mysis Plumosus, p. 116. The animal described must be very 
interesting, but certainly does not belong to the genus in which he 
has placed it. Of the genus phronima he describes two species, 
distinguished by the third pair of legs, which are equal in the one, 
and unequal in the other. 
In the same family with the last-mentioned genus he has given a 
hew genus, named typhis, which he describes as having ten legs, 
but his figure exhibits parts for the attachment of 14 legs fitted for 
locomotion. He says that it is a very rare species, and is taken with 
difficulty. Pl. 2, f. 9. of 
Euphreus, a new genus 125, pl. 3, f. 7, with a depressed body. 
It is placed by Risso amongst crustacea with their bodies laterally 
compressed ; it has probably some affinity with cancer talpa mont. 
Trans. Linn. Soc. ix. pl. 4, f.6. (See Trans. Linn. Soc. ix. 
p- 372.) 
* This name he has substituted for Calypso, which he found to have been used 
before. In doing so he has fallen into a similar error, (See Trans. Linn. Soc. 
vol, xi. p. 373, ; 
