678 CRUSTACEA. 



following. Last abdominal segment elongate, truncate, spinulous 

 at apex, outer longer spinules situated close together on the angles. 



Plate 45, fig. 5 a, animal, enlarged; b, caudal extremity. 



Pacific, Kingsmills Islands, twenty miles north of Charlottes. Col- 

 lected, April 21, 1841. 



Length, one and a half lines. Colourless. 



The individual examined was immature, the thoracic legs being all 

 rudimentary, and not even tubercles apparent as representatives of 

 the abdominal appendages, excepting for the two anterior pairs. The 

 first antennae were very much shorter than the carapax. The first 

 joint extends a little beyond the eyes ; and the process at its apex is 

 one and a half times as long as following joint. The caudal lamellae 

 are also immature, being but half as long as the caudal segment. 

 This segment has the usual length, and is probably quite as long as 

 the lamellae when they are mature. 



FURCILIA MICROPHTHALMA. 



Carapax breviter rostratus, postice* transversus, angulis rotundatus, 

 rostro oculis paulo longivre. Oculi parvuli. Antennae internee cara- 

 pace paulo breviores, basi longo, processu articuli primi vix longiore 

 quarn articulus proximus, ramis cequis, articulo precedente plus duplo 

 longioribus. Segmentum abdominis postremum lamellis caudalibus lon- 

 gius,prope extremitatem utrinque subito angustatum, spinulis apicalibus 

 cequis minutis, aliis tribus longioribus pone apicem r&motis. 



Carapax short rostrate, transverse behind, and angles rounded, beak 

 a little longer than the eyes. Eyes quite small. Inner antennae a 

 little shorter than the carapax, base long, process of first joint a 

 little longer than next joint, branches equal, much longer than pre- 

 ceding joint. Last abdominal segment longer than caudal lamellae, 

 narrowed abruptly near the extremity, apical spinules equal, 

 minute, three longer remote from apex. 



Plate 45, fig. 6 a, animal, enlarged; b } caudal extremity; c, inner 



