216 CRUSTACEA. 



shade; while in the specimens of the other species that approach this, 

 the fingers are black or dark brown. The two posterior teeth of the 

 margin (T and S) are very much nearer one another than N and T, 

 and they are small conical teeth, somewhat obtuse, differing much in 

 appearance from those of the niger. The fingers of the smaller hand 

 in the male leave a wide space between them when closed, and each 

 has two very small teeth or salient angles on the margin; the right 

 hand has three small teeth on the moveable finger, rather distant 

 from one another, and on the immoveable finger, three or four teeth 

 towards base, and one half way from these to the apex. 



The Menippe Martensii of Krauss resembles this species in the out- 

 line of the carapax, but not in its long arm and in other characters. 



CHLORODIUS NIGER. 



Feejee Islands; Tongatabu; Wakes Island; Upolu; Sooloo Sea, and 

 Mangsi Islands. 



Plate 12, fig. 5 a, antero-lateral portion of carapax, enlarged two 

 diameters; b, larger hand, enlarged two diameters; c, front view of 

 front. 



The carapax is not narrower across from S to S than from T to T, 

 the teeth T and S being about equally prominent, and T, S not nearer 

 than N, T. All the teeth in adults are obtuse. It is owing to E 

 being obsolete that the number of the teeth is only four ; there is 

 usually a slight trace of E in a swelling of the surface. The areolets 

 adjoining the margin are smoothly rounded, and the surface in that 

 part, hence appears as if made up of a few wrinkles. The rest of the 

 surface is smooth, with faint traces of the medial areolets. 



Cancer niger, FORSKAL. 



Chlorodius niger, KupPELL, Krabben des rothen Meeres, p. 20, pi. 4, f. 7; EDWARDS, 

 Crust., i. 401. 



Chlorodius hirtipes, var. (?) ADAMS and WHITE, Crust. Samarang, p. 40, pi. 11, f. 4. 



GENUS PILODIUS, Dana. 

 Pilumno aspectu similis; pedibus anteniiisgue Chlorodio affinis. Arti- 



