

CYCLOPOIDEA. J^j 



one-fourth the cephalothorax. Caudal stylets oblong, about as long as 

 last abdominal segment; caudal setae not longer than abdomen, some- 

 what divergent. Anterior antennae two-thirds the length of the cepha- 

 lothorax, nine or ten joints; the first very short, the second, third, and 

 fourth rather long and nearly equal. Setae short, the longest at apex 

 directed forward, but not longer than the joint ; posterior subapical 

 very short ; anterior antepenult, obsolete. Two pairs of natatories, 

 the last two thoracic segments having none; both branches one-jointed. 

 Length, one-sixteenth of an inch. Colour blue, having a long central 

 area of a dirty yellowish colour, with red either side. 



PONTELLINA MEDIA. 



Frons rotundatus. Cephalothorax 5-articulatus, segmento postico brevis- 

 simo et valde angvsto, non acuto, capite vix discrete. Oculi superiores 

 remotiusculi, inferiores parvuli. Antennae anticce corporis longitudine, 

 par urn duplo curvatce, fere transversa^, apicibus f route anterior ibus, 

 setis brevibus, rectis, apicalibus articuli longitudine, posticd penultimd 

 parce longiore, aliis subapicalibus brevioribus. Styli caudales oblongi. 

 [Abdome7i 2-articulatum.~\ 



Front rounded. Cephalothorax a little slender, segments five, the last 

 short and quite narrow, subobtuse behind. Superior eyes somewhat 

 remote, the inferior quite small. Anterior antennae as long as the 

 body, somewhat doubly curved, nearly transverse, the tips a little 

 anterior to line of beak, setae short, the apical not longer than the 

 apical joint, posterior penult a very little longer, the other subapical 

 shorter. Caudal stylets half as long as abdomen, not divaricate. 

 [Abdomen two-jointed, the second segment longest.] 



Plate 80, fig. 5 a, animal, enlarged ; b, extremity of antenna. 



Sooloo Sea, fifteen miles west of Panay, January 27, 1842. 



Length, one-twentieth of an inch. A little smoky brown near the 

 middle of the thorax ; and also one branch of posterior antennae pre- 

 senting the same tint. The posterior thoracic segments diminish in 

 breadth successively, and the last is but little broader than the abdo- 



286 



