ORDER PGECILOPODA. 
373 
Desmar. Consid. 1. 4. The Oniscus lutosus of Slabber (En- 
cyclop. Method. Att. d’Hist. Natur. cccxxx. 7, 8), appears, by 
reason of the fin-like appendages of the tail, to form a subgenus 
proper. The binocle a queue en plumet of Geoffrey might be 
placed in it. 
In all the others, the upper part of the abdomen is imbri- 
cated, or this part of the body, is, as it were, enclosed in a 
sort of case, formed by the hinder feet, which resemble mem- 
branes, and are folded upwards. 
Among these last there are some whose antennae are never 
advanced in the manner of small claws, all whose feet are free, 
and the last of which do not envelope the body in the man- 
ner of a membranaceous case. They form the following sub- 
genera, 
Pterygopoda, Latr. Nogaus ? Leach , 
Which have the posterior extremity of the body terminated by 
two fin-like appendages ; feet pinnated or digitated on the 
under part of the post-abdomen, or of the second division of 
the body not covered by the shield, and a distinct beak. 
But a single living species, found upon the shark. See the 
genus Nogaus, Desm. Consid. p. 340. 
Pandarus, Leach, 
Which have two filaments at the posterior extremity of the 
body ; the feet of the first and of the fifth pair unguiculated, 
and the others digitate, but whose siphon is not apparent. 
Pandarus bicolor, Leach, Desmarest, 1. 5 ; Pandarus 
Boscii, Leach, Encyc. Brit. Suppl. I. xx. See, for the other 
species, Desm. ibid. p. 339. 
Dinemoura, Lat., 
Having likewise two long filaments to the anus, but whose 
siphon is apparent. Their two anterior feet are unguiculated, 
