1228 



CRUSTACEA. 



in Corycceus. Posterior antennae small, short setigerous at apex, 

 not larger than the anterior feet, second joint having an angle on 

 the posterior margin. Anterior feet monodactyle, not differing 

 between the sexes, finger slender. 



The Antariae differ from the species of the preceding genus in having 

 the anterior feet not smaller than the posterior antennae, and sometimes 

 very much larger. Moreover, the posterior antennae terminate in a 

 short slender joint, having a few setae and perhaps a claw at apex; 

 and the preceding joint has an obtuse angle on the posterior side, with 

 a very minute seta at its apex. Besides, the cephalothorax as far as 

 observed is obtuse behind, and the conspicilla are remote. 



The anterior antennae have two very short joints at base, and three 

 longer subequal joints, the last of which is usually triarticulate. 

 These organs are bent at an obtuse angle after the third and fourth 

 joints. The setae are nearly as in the Corycaei, sometimes nearly as 

 long as the antenna. 



The external ovarian sacs are subdorsal in position, being attached 

 to the second abdominal joint on its upper and outer side. 



The ventral line in the profile of the Antariae is slightly convex, or 

 forms a low angle at the mouth. 



The first pair of feet have each a slender finger, which folds down 

 upon the inner side of the preceding joint or hand, as in Corycceus. 



Antarta, Dana, Amer. Jour. Sci. [2], i., 229; Proc. Amer. Acad. Sci., ii. 39. 



Antaria CRASSIMANA. 



Pedes antici pervalidi, antennis posticis valde majores, articulo secundo 

 abdomen longitudine fere cequante. Abdomen S-articulatum, segmentis 

 prirno tertioque perbrevibus. Styli caudales abdomine triplo et setce 

 duplo breviores. 



Anterior feet very stout, much longer than the posterior antennae, 

 second joint about as long and stout as the abdomen, claw but little 

 shorter. Abdomen three-jointed, second segment long elliptical, 

 first and third very short. Caudal stylets about one-third the 

 length of the abdomen, setae a little longer, the two exterior nearly 

 as long as the stylet. 



