

1216 CRUSTACEA. 



jointed, first segment broad elliptical, with a very short cylindrical 

 apex, second segment cylindrical, about half shorter than the first. 

 Caudal stylets less than half the abdomen in length, setae slightly 

 longer. 



Plate 85, fig. 8 a, animal, enlarged; b, same in dorsal view; c, nata- 

 tory leg. 



Atlantic, latitude 4°-5° north, longitude 19°-22° west, October 

 22-26, 1828, abundant; latitude 1° south, longitude 18° 30' west, 

 November 5, 1838; latitude 0° 15' south, longitude 31° west, May 

 17, 1842. 



Length, one-twentieth of an inch. Colour, blue, with deeper blue 

 along the venter; pigment of the eyes deep blue. 



The basal joint of the anterior antennae is the largest. The cylin- 

 drical part of the abdomen is very nearly as long as the elliptical por- 

 tion, and the stylets are but little shorter. The fourth segment of 

 the cephalothorax is acute behind, as in the preceding species, but the 

 conspicilla are rather distant, the caudal stylets and setae are shorter, 

 and the elliptical part of the abdomen is shorter in proportion. 



CoRYCtEUS vitreus. 



Gephalotliorax crassus, segmento quarto brevissime acuto. Conspicilla 

 remotiuscula. Antennas, anticce elongate^ setuiosce. Antennarum postv- 

 carum articulus 2dus digito vix brevior, seta nudd, longd. Abdomen 

 2-articulatum, apice cylindrico brevi. Styli caudales dimidii abdo- 

 minis longitudine, setis stylos paulum super untibus. 



Cephalothorax rather stout, fourth segment very short acute. Con- 

 spicilla large, rather distant. Anterior antennae six- or seven- 

 jointed, setae long. Finger of posterior antennae about as long as 

 second joint, seta of second joint long, naked. Abdomen two- 

 jointed, subovate, quite a short cylindrical apex. Caudal stylets 

 about half as long as abdomen, setae rather longer than the stylets. 



Plate 85, fig. 9 a, animal, enlarged; b, same, dorsal view; c, ante- 

 rior antennae ; d, anterior legs. 



