1210 CRUSTACEA. 



CORYC^EUS DEPLUMATUS. 



Conspicilla remotiuscida. Antermm anticce brevissime setulosce, 7-arti- 

 culatce. Antennarum posticarum articulus 2dus digito brevior, seta 

 setulosd longd, et alid nudd. Abdomen uni-articulatum, tenue. Styli 

 caudales vix dimidii abdominis longitudine; setis plus dimidio bre~ 

 vioribus. 



Conspicilla large, rather remote. Anterior antennae very short seti- 

 gerous, seven-jointed. Finger of posterior antennae longer than 

 second joint, one setulose seta and another naked, both long. Ab- 

 domen one-jointed, slender. Caudal stylets hardly half as long as 

 abdomen, seta more than half shorter. 



Plate 85, fig. 3 a, animal, natural size ; b, one of the natatory legs. 



Atlantic, latitude 9° 20' north, longitude 24° 15' west, October 13, 

 1838. 



Length, one-thirtieth of an inch. Nearly colourless; bluish along 

 the venter. 



The conspicilla are more remote than in the two preceding species. 

 The abdomen in a lateral view diminishes from near the middle by a 

 gradual concave slope, and at the angle there is a pair of minute 

 appendages. 



Natatories five pairs, the last shortest and the penult longest. The 

 branches are triarticulate, and they arise from a two-jointed base. 

 Seta at apex of longer branch with distant pectination. On pressure 

 a cylindrical mass of reddish matter was pressed out from the abdomen 

 at the spot where its breadth diminishes and the minute appendages 

 occur. 



Plate 95, figs. 7 a, b, c, represent a young individual, which we suspect 

 may pertain to this species, though it is very doubtful ; it was found 

 on the same day in the same bucket of water. It is rounded elliptical 

 in form, prolonged behind, and having the posterior extremity mar- 

 gined with half a dozen minute spines a little remote. Eyes small, 

 on a single red spot near the front margin. There are six pairs of 



