1116 CRUSTACEA. 



first nearly obsolete. The right posterior angle of the cephalothorax is 

 the longest. The beak has below two rounded prominences. The 

 feet following the maxillipeds are small and slender, three-jointed, the 

 last joint having very short reversed seta. 



Candace curta. 



Maris :— C. ornatse similis. Cephalothorax 5-articulatw, postict aeutus. 

 Antennas anticce corpore parce longwres, e basi arcuatce; articulis 13, 

 14 15, 16, 17 antennas dextrce incrassulatis, articulo 17 elongate apice 

 prominulo, partim subtilissime pectinato, sequentibus sex brevibus, d 

 tenuissimis. Pes posticus dexter apice subulatus, appendice laterali 

 curtd, spiniformi. 



Male .—Near the C. ornata. Cephalothorax five-jointed, last segment 

 short, posterior angle long acute. Anterior antennae a little longer 

 than the body, twenty-two- or twenty-three-jointed, arcuate from 

 the base, and then straight; the right one slightly enlarged at 

 middle along the joints 13, 14, 15, 16, 17, seventeenth joint elon- 

 gate, very finely pectinate on the apical half, apex slightly promi- 

 nent, the following joints (following the geniculation) six in number. 

 Right foot of posterior pair slender, acute, subulate, subuncinate at 

 apex, lateral appendage having the form of a short spine. 



Plate 78, fig. 6 a, animal, enlarged; a', extremity of anterior an- 

 tenna; b, maxilliped; c, right leg of posterior pair (not quite com- 

 plete); d, left, ditto. 



Pacific, about three hundred miles southwest from Valparaiso, lati- 

 tude 50° 20' south, longitude 81° 30' west, April 10, 1839. 



Length, one-twelfth of an inch. Nearly colourless, except the 

 extremities of the natatory legs which are black, and also, the extre- 

 mities of the antennse, and of the acute posterior angles of the cephalo- 

 thorax. r » 



This species is near the preceding, but is peculiar m its postenor 

 thoracic feet, and some other points. The right posterior angle olUie 

 cephalothorax is longer than the left and bent inward. The aboo- 



