CYCLOPOIDEA. ^257 



gulo postico subacute. Abdomen angustum, 6-articulatum } segmento 

 primo brevissimo, secundo latere obtuso, tribus sequentibus lunatis. Con- 

 spirilla remotiuscula, f route insita. Maris : — Corpus elongate ovatum, 

 10-articidatum, postich segmentis sensim minoribus, segmento antico 

 semwiradari, lateribus obtusis. Co<%spicilla remotiuscula f route insita. 

 Maris corpus diaphanum pulchrd versicolor; feminae subdiaphanum, 

 incoloratum. 



Finger of posterior antennae slender, longer than second joint, claw 

 small. Caudal lamellae twice as long as broad, setae much shorter 

 than half the lamellae, one at inner apex nearly obsolete. Female: 

 — Cephalothorax ovate, five-jointed, first articulation nearly obsolete, 

 anterior segment not transverse, the posterior similar to one another, 

 posterior angle subacute. Abdomen narrow, six-jointed, first seg- 

 ment very short, second laterally obtuse, the three following lunate. 

 Conspicilla rather remote, situated on the front. Male: — Body long 

 ovate, ten-jointed, segments posteriorly gradually smaller, anterior 

 segment semicircular, sides obtuse. Conspicilla rather remote, 

 situated on the front. 



Plate 88, fig. 6 a, male, enlarged; a', view, showing outline of 

 stomach ; b, posterior antennae ; c, leg of first pair. Fig. 7 a, female, 

 enlarged; a 1 , anterior antennae; b, posterior antennae; c, leg of first 

 pair. 



Atlantic, latitude 20° to 23° south, longitude 38° 45' to 41° ; five 

 individuals taken, November 17 and 19, 1838; also latitude 24° south, 

 longitude 43°, just south of Rio Janeiro, January 9, 1839; also 

 latitude 4i° south, longitude 25° west, May 13, 1842. 



Length of female, one-twelfth of an inch; of male, one-fifteenth of an 

 inch. Male, nearly transparent; colours, bright and of light tints, vari- 

 able. Female, nearly colourless, and less transparent than the male. 

 Eggs of external sacs dull-greenish; in other specimens eggs of 

 internal ovaries pale blue or wine-yellow. 



The antennae have the second joint largest ; the third hardly half 

 the second. Claw of posterior antennae quite short. The stomach in 

 the male occupied the larger part of the cephalothorax, and had five 

 deep lobes in each side, which were attached by muscles. The ovaries 



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