CYCLOPOIDEA. 



1247 



quam lamellae. Feminae :— Corpus valde convexum. Cephalothorax 

 ellipticus, 5-articidatus, segmento antico rum oblongo, postico parvo. 

 Conspicilla fronte insita. Abdomen h-articulatum, segmento primo 

 minore, latere truncato, tertio quartoque lunatis, 2do sublunato. 



Finger of posterior antennae rather stout, as long as second joint or 

 slightly longer, the two joints of finger very unequal. Caudal 

 lamellae ovate, nearly twice as long as broad, setae five, one inter- 

 nal, two apical, the others external, all shorter than the lamellae. 

 Female: — Body much convex. Cephalothorax elliptical, five- 

 jointed, first segment not oblong, posterior segments laterally obtuse, 

 the last abruptly narrower than the preceding. Conspicilla situ- 

 ated on the front, of moderate size. Abdomen five-jointed, first 

 segment short, laterally truncate, third and fourth lunate, acute, 

 second sublunate. 



Plate 87, fig. 10a, animal, enlarged; b, posterior antenna. 



South Pacific Ocean, one hundred and fifty miles south of Tonga- 

 tabu. 



Colour, deep azure blue reflections from a black ground. The ante- 

 rior segment of the cephalothorax is about as long as broad. The 

 last segment is half shorter and nearly half narrower than the pre- 

 ceding. The first abdominal segment bears as usual lateral appendages. 



This species resembles the following ; but the caudal lamellae are 

 shorter and their setae much longer ; moreover, the finger of the pos- 

 terior antennae is not shorter than the preceding joint; and the claw 

 of these organs is much less than half the finger in length. 



SAPPHIRINA DETONSA. 



Digitus antennarum posticarum tenuis, articulo 2do paulo brevior, un- 

 guiculo dimidii digiti longitudine. Lamellae caudales approximate, 

 subovatas, latitudine plus duplo longiores, setis brevissimis (pbsolescenti- 

 bus). Feminae: — Corpus valde convexum. Cephalothorax ellipticus, 

 h-articulatus, segmento primo non oblcmgo, aliis latere obtusis. Con- 



