GONOPLAX BISPINOSA. 
Tab. XIII. 
G. testa angulis anticis epini-formibus, lateribus utrinque, brachiis supra, carpis interne femo- 
ribusque apice unispinosis. 
Cancer angulatus. Penn. Brit. Zool. iv. 7. PI. 5. Jig. 10. mas. 
Fabr. Suppl. Ent. Syst. 341. 
Herbst. i. 85. Tab. 1. fig. 13. 
Gmel. Syst. Nat. i. 2971. 
Ocypoda angulata. Bose. Hist. Nat. des crust, i. 198. 
Ocypode angulata. Leach Edin. Encycl. vii. 393. 
Gonoplax angulata. Leach Edinb. Encycl. vii. 430. 
Trans. Linn. Soc. xi. 323. 
Pig. 1, Mas. 2, Maris abdomen. 3, Femina. 4, Feminae abdomen. 5, Mas junior. 
6, Pedipalpus. 7, Antenna externa. 8, Antenna interna. 
Gonoplax bispinosa was discovered at Weymouth by the late Dutchess of Portland, from whose 
cabinet it was first described and figured by Pennant. It is not uncommon in the Sound of Ply- 
mouth, and is often taken in trawl nets. 
In the Kmgsbridge estuary this species was first observed by Montagu, and has since been 
taken in great plenty by Mr. C. Prideaux, and by Mr. J. Cranch. The latter gentleman ob- 
serves, that they 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 large specimens from which the 
annexed figures are taken, occurred at a bank called the Dentridge, which is rarely uncovered 
excepting at very low tides. 
The colour is yellowish red, the thumb only being blackish or greenish-black 
The anterior legs of the adult male are nearly five times the length of the shell, but in younger 
specimens they are but little longer than those of the females, in whom they are about twice the 
length of the shell. 
