CYCLOPOIDEA. 



1191 



sides of the vessel in which it was placed, and worked its way up 

 above the surface of the water. 



Harpacticus concinnus, Dana, Proc. Amer. Acad. Sci., i. 152. 



Harpacticus SACEE. 



Cephalothorax ovatus, anticd subdeltoideus, dimidio longitudinis latior, 

 segmentis posticd obtusis. Abdomen subito multo angustius et bre- 

 vius quarn cephalothorax, Q-articulatum, segmento primo brevi. An- 

 tenna anticce breves; feminse 9-articuIatce, articidis basalibus quatuor 

 setis totis brevibus ; maris articulo quinto {sexto?) crassissimo, sub- 

 ovato, margine anteriore rectiusculo, digito 2-articulato duabus setis 

 minutis ad apicem instructo. Pedes antici parvi, digito tenui, largd 

 dimidii articuli secundi longitudine. Styli caudales brevissimi, parum 

 divaricati; setd secundd corporis longitudine, tertid dimidio breviore, 

 prima perbrevi. 



Cephalothorax ovate, with the front subdeltoid, length hardly twice 

 the breadth; segments (in upper view) obtuse behind. Abdomen 

 abruptly much narrower than cephalothorax and also much shorter, 

 six-jointed, first segment short. Anterior antennae very short, in 

 female nine-jointed, basal joints four, the setae throughout quite 

 short, in male the fifth joint (sixth ?) very stout, subovate, with the 

 anterior margin nearly straight, articulating with this joint a two- 

 jointed finger, stout, and having two small setae at apex. Anterior 

 feet rather small, finger slender and longer than half the second 

 joint. Caudal stylets very short, a little divaricate, second seta as 

 long as the body, the third half shorter, the first minute. 



Plate 83, fig. 8 a, male, enlarged ; b, eyes ; c, hand of male anterior 

 antenna; d, female anterior antenna; d, extremity of posterior an- 

 tennae ; e, first pair of legs ; /, second pair. 



Abundant in salt-water pools, on rocks, along the shores of the har- 

 bour of Valparaiso, May, 1839. 



Length, one-sixteenth of an inch. Colour, a little reddish. Ante- 

 rior antennae of male not longer than breadth of cephalothorax, hand 



