ORDER DECAPODA. 
191 
articulation but one, or that which is in the form of a hand, 
and the body, or articulation which precedes it, is not an- 
nulated. 
First come the Carides, whose feet are robust, and not 
filiform, and without any appendage at their external base ; 
their body is never very soft nor very much elongated. 
Among these subgenera with feet without appendages, the 
three following again present unusual forms as regards the 
claws. 
Tn that of 
Crangon, Fab , 
The two anterior claws, larger than the following feet, have 
but a single tooth at the place of the index or fixed finger, 
and that which is mobile is in the form of a hook, and bent. 
The upper and middle antennm have but two threads; 
the second feet are folded, more or less distinctly bifid or 
didactylous at their extremity; none of their articulations 
are annulated ; the anterior bill of the testa is very short. 
We shall not separate from Crangon the Egeon of M. 
Risso, or the Pontophilus of Dr. Leach. In the latter, the 
last articulation of the external jaw-feet is as long again as 
the preceding, while they are of equal length in the first ; the 
second feet of Egeon are shorter than the third, and the 
smallest ol all, whereas their length is the same in crangon. 
But the number of species being very limited, this generic 
distinction becomes so much the less necessary. ( Crangon 
vulgaris.) 
Processa, Leach , Nika, Risso , 
Have one of the anterior feet simply terminating in a point, 
and the other m a didactylous forceps ; the two following are 
unequal, slender, and also terminated by two fingers ; one of 
these second feet is very long, with the carpus and the pre- 
