^g^ CRUSTACEA. 



Clytemnestra scutellata. 



Cephalothorax subacute rostratus, segmento antico lato, posticl utrinque 

 dilatato, tribus segmentis sequentibus subito angustioribus, rnargine 

 posteriore valde arcuatis et lateribus posticd productis et subacutw. 

 Abdomen Q-articulatum,, segmentis subcequis, decrescentibus. Antennce 

 anticce elongaice, 8- (9- ?)articulatce ; articulo quinto (sexto?) arcuato, 

 sequente oblongo et apice cum appendice instructo (?), reliquis tribus 

 oblongis; setis longis divaricatis, duabus apicalibus fere antennce longir 

 tudine. Pedes antici pergrandes; articulo secundo subclavato, digito 

 tenui arcuato fere articuli secundi vel precedentis longitudine. 



Cephalothorax subacutely rostrate, anterior segment broad, and the 

 posterior angles projecting laterally; the following three segments 

 abruptly diminish in breadth, have the posterior margin much 

 arcuate, and the sides produced backward and subacute. Abdomen 

 six-jointed, segments subequal, decreasing successively. Anterior an- 

 tennae elongate, eight- (or nine) -jointed, the fifth (sixth?) arcuate, 

 the following oblong, and bearing a short appendage at apex, the 

 remaining three oblong; setse of anterior antennae long divaricate, 

 two apical almost as long as the antenna. First pair of feet very 

 large, second joint subclavate, with a slender arcuate finger nearly 

 as long as preceding joint. 



Plate 83, fig. 12 a, animal, enlarged; b, eyes ; c, posterior antenna*; 

 d, extremity of a maxilliped; e, cheliform legs; /, leg of the three 

 natatory pairs. 



Pacific, longitude 124° west, latitude 18° south, August 6, 1839, at 

 5 h. A. m. The description and figure are from the specimens of this 

 locality. Afterwards, near Pitt's Island, Kingsmill Group, April 30, 

 1841, and in the China Sea, February 17, 1342, three hundred miles 

 northeast of Singapore. 



Length, one-twenty-fourth of an inch. Colourless. Anterior seg- 

 ment of body scarcely longer than broad. Eyes on a large subquad- 

 rate mass of deep red pigment. Abdomen more than half as long as 

 cephalothorax ; the segments with convex sides. Antennas longer than 



