CANCROIDEA. 215 



front margin of the arm there is an acute spine, and the carpus is 

 acute on the inner side on the right arm, and subacute on the left 

 arm. The extremity of the tarsus is like that of the loevissimus. 



An imperfect specimen from the Feejees or Tongatabu, has the 

 lateral teeth of this species, and may be identical with it : see figure 

 36, plate 12, which represents the antero-lateral margin. The carpus 

 is prominent acute at its inner angle, and there is a prominence on the 

 anterior margin of the arm. 



CHLORODIUS LOEVISSIMUS. 



C. nigro affinis. Carapax perlcevis, nee ad medium nee versus latera areo- 

 latus, margine antero-laterali 4:5-dentato, dentibus Net Tpaulo remotis, 

 E scepe obsolete, S minore, T et S obtusis, carapacis latitudine T majore 

 quam latitudo S. Pedes antici longi, pervalidi, Iceves, digitis multo 

 hiantibus. Pedes 8 postici paulo pubescentes. 



Near C. niger. Carapax very smooth, not areolate either at middle 

 or towards the sides; antero-lateral margin four to five-toothed, 

 tooth E often obsolete, S smaller than T, T and S obtuse, breadth 

 of carapax across from T to T greater than from S to S. Anterior 

 feet long and very stout, smooth, fingers much gaping. Posterior 

 eight feet somewhat pubescent. 



Plate 12, fig. 4 a, male, enlarged three diameters ; b, extremity of 

 male abdomen, enlarged; c, female abdomen, enlarged; d, right hand, 

 enlarged three diameters ; e, left, ibid. ; /, part of outer maxilliped ; g, 

 extremity of tarsus, much enlarged. 



Sandwich Islands. Probably the same from Tutuila, of the Samoan 

 Group, and from the Straits of Balabac. 



The absence of all areolation, even near the lateral teeth, distin- 

 guishes this species from the niger or cytherea. Some young speci- 

 mens of the preceding species appear to approach the Icevissimus. But 

 the hands afford another distinctive character, they being very stout, 

 and the fingers less slender and more gaping than in the niger. The 

 specimens are of a pale colour, not even the fingers having a dark 



