DECAPODA, 
205 
tliey are equal. The second feet of the Egeones arc shorter tlian the 
third and tlie smallest of the whole number, whilst in Crangon their 
length is tlie same. Besides, as the number of species is very 
limited, this generic distinction becomes the less necessary. 
C. vulgaris. Fab. ; Roes., Insect., Ill, Ixiii, 1,2, (The Shrimp), 
about two inches long. It is smooth, of a pale glaucous green, 
dotted with grey. That part of the thorax which supports the 
third pair of feet projects in a point. This species is very com- 
mon on the oceanic coast of France, where it is vulgarly called 
the Car (ion. It is taken there annually in nets. Its flesh is deli- 
cate, and highly esteemed. In the same locality, though rarely, 
according to M. Brehisson, is found the C. ponctue de rouge, of 
Risso ; hut I consider it, Avith him, as a mere variety. The C . 
loricatus — Egeon loricafus, Risso; Cancer c at ap hr actus, Oliv. , 
Zooh, Adriat., Ill, 1 , has three longitudinal and dentaled ridges 
on the thorax. 
Northern seas produce a large species, the Crangon horeas, 
Phipps., Voy. to the North Pole, pi. xi, 1, Hcrhst. XXIX, 2. 
Processa, Leach . — Nika, Risso. 
One of the two anterior feet simply terminating in a point, the 
other in a didactyle claw ; the two following are unequal, slender, 
and also didactyle. One of these second feet is very long, its carpus 
and the preceding joint being annulated, a character Avhich on the 
other foot is only found in the first of these joints. "^I'lie fourth pair 
of feet are longer than the preceding and two following ones. The 
superior antennee have hut tAVo threads. 
P. edulis ; Nika edidis, Riss., Crust., Ill, 3, is of a flesh colour 
dotted Avith yelloAvish; a line of small yelloAV spots in the middle. 
The anterior extremity of the shell is furnished AAutli three 
sharp points, the intermediate of Avhich, or the rostrum, is the 
longest. The tAA'o anterior feet are equal in size, the right one 
forming a forceps. This species is found during the Avhole year 
in the markets at Nice. It is also found on the coast ol the 
department of France, called the Bouches-du-Rhone *. 
Hymexoceua, Latr. 
The tAVO anterior feet terminated by a long hook Avith a bifid ex- 
tremity, and composed of Amry short diAusions. The tAVo folloAving 
are Amry large ; the hands, immoveable finger, and superior thread of 
the intermediate antennae are dilated, membranous, and almost foli- 
aceous. The external foot-jaAA's are equally foliaceous, and cover the 
mouth. 
The only species knoAA’n is in the collection of the Museum 
d’ Histoirc Natui'elle, and Avas captured in the Indian Ocean. 
* For the remaining species, see Risso, Hist. Nat. des Crust, cle Nice ; Leach, 
Malac. Brit., XLI ; and the Nouv. Diet, d’llist. Nat., Ed. II. 
