GAMMARIDEA. 959 



Dercothoe emissitius. 



Corpus gracile. Caput oblongum, lateribus antice valde productum. 

 Antennas setosce; lmce dimidio corporis vix longiores, articulis lmo 

 Stioque subcequis, 2do longiore, flagello non longiore quam basis, fermd 

 1 -articulate, terete, appendice 3-articulatd ; 2dce breviores, bad vix brer 

 viore quam Imarum basis, articulis Stio Ateque subwquis, 2do brevi, 

 flagello breviore quam basis, fermd 1 -articulate. Pedes lmi parvuli, 

 rnanu perangustd; 2di validi, manu grandi subovatd, sparsim setesd, 

 supra parce arcuatd, palmd non excavatd, setarum fasciculis brevium 

 ornatd, digite mediocri. Pedes 6 postici sensim increscentes, setis 

 paucis; hti Atis breviores. 



Body slender. Head oblong, with an ocular prominence on front mar- 

 gin either side. Antennse setose ; the superior hardly longer than 

 half the body, first and third joints subequal, second longer, flagel- 

 lum not longer than base, about seven-jointed, appendage three- 

 jointed; inferior shorter, base about as long as base of superior 

 pair, third and fourth joints subequal, second short, flagellum 

 shorter than base, about seven-jointed. Anterior feet quite small, 

 and hand very narrow; second pair strong, the hand large sub- 

 ovate, sparsely setose, above sparingly arcuate, palm not at all 

 excavate, finger half as long as hand. Six posterior feet gradually 

 increase in length, setae few, the fifth pair shorter than fourth. 



Plate 66, fig. 9 a, animal, enlarged ; b, head, more enlarged ; c, por- 

 tion of flagellum of superior antennas ; d, leg of fourth pair ; e, ibid, 

 of fifth. 



Sooloo Archipelago ; in six and a half fathoms water. Collected, 

 February 2, 1842. 



Length, four lines. The projection on either side containing the 

 eye is about half as long as first basal joint of superior antennae. The 

 flagellum of the superior pair consists of oblong terete joints; the setae 

 of the under side are longest, being three or four times as long as the 

 diameter of the joints; and this is true also of the flagellum of the 



243 



