1246 



CRUSTACEA. 



Sapphirina splendens. 



Digitus antennarum posticarum tenuis, articulo 2do vix brevier. Lamellae 

 caudales ovato-rotundatm, apice inter no acuto; setis quatuor, duabus 

 apicalibus dimidio lamellae vix brevioribus, aliis externis. Maris : — 

 Corpus valde depressum, ovatum, segmento primo {vix duplice) trans- 

 verso, aliis longitudine subcequis, latere obtusis. Conspicilla fronte 

 insita. 



Finger of posterior antennas slender, very nearly as long as second 

 joint. Caudal lamellae rotund-ovate, quite short, length once and a 

 half the breadth, inner apex acute, setae four, two apical half as 

 long as the lamellae, the others external. Male: — Body ovate, flat, 

 eight-jointed, segments laterally obtuse, anterior like the letter D, 

 shorter than broad, and having an obsolete articulation across, the 

 others subequal, laterally obtuse. Conspicilla of moderate size, 

 situated on the front. 



Plate 87, fig. 9 a, animal, enlarged ; b, posterior antenna (sketch 

 not finished) ; c, caudal lamellae. 



Pacific, thirty miles west of Assumption, one of the Ladrones, lati- 

 tude 19° 30' north, longitude 144° 30' east, December 31, 1841. 



Length, one-fifteenth of an inch. Presents bright metallic reflec- 

 tions. This species is peculiar in its very short caudal lamellae, of 

 nearly ovate form ; in its articulations having the posterior lateral 

 angles obtusely rounded, and in its conspicilla in contact on the front. 

 The lamellae are much shorter than in the following species with con- 

 tiguous conspicilla. 



Sapphirina ovalis. 



Digitus antennarum posticarum crassus, articulo 2do fere longior, arti- 

 culis digiti valde incequis. Lamellce caudales ovatoe, setis qumque, 

 una interna, duabus apicalibus, et aliis externis, totis paulo brevioribus 



