j^54 CRUSTACEA. 



lamellae is not prominent, and has a very minute acute point. The 

 hairs of the anterior antennae are not as long as the organ. 

 This species may possibly be the Sapphirina indicator. 



SAPPHIRINA BELLA. 



Digitus antennarum posticarum tenuis, fermd articuli 2di longitudine, 

 articulis digiti fere cequis, unguiculo parvulo. Lamellae caudales 

 divaricates, angustce, lanceolatae, setis quatuor, duabus apicalibus, aliis 

 externis, totis perbrevibus. Maris: — Corpus ovatum, 9-articulatum, 

 segmento idtirno tecto, antico parce oblongo, ad latera totis obtusis. Con- 

 spicilla parvula, remotiuscula, inferwra, prope frontem insita. 



Finger of posterior antennae slender, about as long as second joint, 

 two joints of finger nearly equal, claw quite short. Caudal lamellae 

 slender, divaricate, narrow lanceolate, three times as long as broad, 

 setae four, two apical, the others external, all very short. Male: — 

 Body long ovate, about twice as long as broad, lamellar, nine- 

 jointed, last segment concealed, first sparingly oblong. Conspicilla 

 quite small, separate, a little distant from the front. 



Plate 88, fig. 3 a, animal, enlarged; b, prolate lenses, with the 

 intermediate eyes ; c, posterior antennae ; d, caudal lamella and part 

 of segment of abdomen, to which it is attached. 



Pacific, near Hall's Island, Kingsmill Group, April 13, 1841, at 

 4 A. M. 



Length, one-fifteenth of an inch. Transparent. Purple and car- 

 mine in blotches, changing a little with the position of the animal. 



The outline of the body is even, and all the segments are laterally 

 obtuse and rounded. The first segment is like the letter D in outline. 

 The setae of the caudal stylets are much shorter than half the stylet. 

 The tips of the anterior antennae were barely seen in an upper view, 

 as they project but slightly. 



Sapphirina opalina. 

 Digitus antennarum posticarum tenuis, articulo 2dofere lougio?', ungui- 



