GONOPLAX. 
OCYPODA. Bosc. 
CANCER. Pennant. 
GONOPLAX. Leach. 
Antenne externe setacee, graciles, elongatz sub oculis inserte : 
interne in foveolis transversis reposite. 
Pedipalpi gemini externi cauli interno biarticulato ; articulo secundo quadrato ad apicem 
interiorem truncato-subemarginato, palpigero. 
Pedum par anticum equale, didactylum, Maris longissimum ; Famin» testa duplo longius ; 
digitis subdeflexis interné inzequaliter dentatis ;_ paria alia cursoria, ordine 4, 3, det 2; 
ungues subcompressi, acuti. 
Abdomen in utroque sexu 7-articulatum. 
Testa quadrata, transversa, anticé latior. 
Ocul pedunculo articulo secundo valdé elongato, ad teste marginem anticum feré attingente. 
punpmmieee Yk 
External antenne setaceous, slender and elongate, inserted under the eyes; internal 
antenne situated in transverse excavations. External double pedipalpes with the second 
joint of their internal footstalk having its anterior apex truncate-subemarginate, for the 
insertion of the palpes. Anterior pair of legs didactyle; of the Maze very long ; of the Femate 
twice the length of the shell; fingers internally unequally dentated ; other legs formed for 
running, in order, according to their length, 4, 3, 5 and 2: claws sub-compressed, sharp. 
Abdomen (in both sexes) seven-jointed. Shell quadrate, transverse, broader before. Eyes with 
the second joint of their peduncles very much elongated, almost reaching to the anterior margin 
of the shell. 
Of this Genus one species only isknown, the economy of which will be given in the following 
page. 
There is another Genus allied to Gonoptax, and with it forms a stirps in one of the most 
interesting families of the brachyourous Malacostraca. 
