GONOPLAX. 
57 
Gen. 17. GONOPLAX, Leach. 
Eye-stalks very long. Carapace much wider than long. 
Eront legs of the adult male nearly five times the length of 
the carapace ; in female about twice the length of carapace. 
Abdomen of male with seven distinct joints, as in the female. 
The Mediterranean species, which is allied to ours, was 
observed by Risso to swim with great ease, and often to 
come to the surface of the water, without however ever 
leaving it. It feeds on small fishes and radiated animals. 
Goxoplaxangulata, Penn. sp. Angular Crab . (Plate IY. 
fig. 2.) — Carapace armed on each side with two small spines 
directed forwards. Arm cylindrical, spined about the middle 
of its upper edge, The wrist with two spines. 
Coast of Devon and Cornwall. In the latter county, ac- 
cording to Mr. Couch, it is* common in moderately deep 
water, and often in the stomachs of fishes. It has been 
taken on the Irish coast. Mr. Cranch observes^ that these 
Crabs live in excavations formed in the hardened mud, and 
that their habitations, at the extremities of which they live, 
are open at each end. The fore legs of the adult male are 
nearly five times the length of the carapace ; but in younger 
* Leach, Mai. Pod. Brit. t. 13. 
