cyclopoidea. 2227 



brevwribus. Antennarum posticarum articulus 2dus ad apicem inter- 

 num acutus, et digitus parvtdus, 3-articulatus (?). Abdomen mediocre, 

 subellipticum. Styli caudales abdomine lo?igiores, setis dimidio brevio- 

 ribus. 



Cephalothorax moderately slender, fourth segment prolonged behind 

 and acute. Conspicilla large, nearly in contact. Anterior antennae 

 seven-jointed, setae rather long, but shorter than the antenna. 

 Second joint of posterior antennae acute at inner apex, finger small, 

 three-jointed (?) . Abdomen rather longer than one-third the cephalo- 

 thorax, subelliptical. Caudal stylets longer than the abdomen, setae 

 about half as long as the stylets. 



Plate 86, iig. 9 a, animal, enlarged ; a', dorsal view ; b, anterior an- 

 tenna ; c, posterior antenna. 



Atlantic, latitude 5° north, longitude 20° west, October 24; and 

 also, latitude 0° and 2° 20' south, longitude 17° and 20° west, Novem- 

 ber 1 and 6, 1838. 



Length, one-eighteenth of an inch. Colourless. 



The length of the stylets exceeds that of the abdomen, and this 

 species is thus at once distinguished from the preceding. The ante- 

 rior antennae have the first and fifth joints longest, and the whole 

 length is about one-third that of the cephalothorax. The finger of 

 the posterior antennae is about half the preceding joint in length. 

 Claw of first pair of feet very short. Natatories four pairs. 



The short exterior seta of the caudal stylets is situated some dis- 

 tance from the apex. The abdomen in an upper view is oblong ellip- 

 tical ; in a lateral view, the upper side is a little convex, the under 

 side very slightly convex, or nearly straight. 



Genus ANTABIA, Dana. 



Cephalothorax fere ac in Corycaeo, postice rotundatus. Abdomen ac in 

 Corycaeo. Antennae posticce parvce, apice breviter setigera3, pedibus 

 anticis non majores, articulo secundo postice angulato. Pedes antici 

 monodactyli, quoad sexus vix dissimiles, digito tenui. 



Cephalothorax nearly as in Corycceus, rounded behind. Abdomen as 



