COPEPODA FROM IFALUK ATOLL 383 



hollowed centrally, separated from head by distinct groove. Epi- 

 meral plates of thoracic somites 2 to 4 normally developed, romided. 

 Genital complex composed of fused somites 1 and 2, with slight 

 lateral swellings. Furcal rami about as long as vnde, with dorso- 

 caudally inserting setae, caudo ventral part of each ramus back- 

 wardly produced, pointed. Setae 2 and 3 short, curved, basally 

 swollen. Antennules 8-segmented; segment 4 long, with small 

 conical process. Antenna Avith allobasis and long, unsegmented 

 exopodite, bearmg 4 setae. Some of endopodal spines spatulate. 

 Mandible with well-developed cutting edge; palp slender, with 3 

 setae, endopodite and exopodite present, both unsegmented, with 

 6 and 2 setae respectively. Arthrite of maxillule with some lanceo- 

 late and some normal setae. Coxal and basal endite present, some of 

 setae spatulate. Basipodite much reduced, fused with endopodite, 

 bearing 4 setae. Exopodite small, with 3 setae. No epipodite. 

 Maxilla with 4 endites (2 praecoxal, 1 coxal, 1 basal), basal endite 

 with strong, coalescent spine. Endopodite reduced, with 4 setae, 

 one of which is strong. Maxilhpede chelate, basis moderately 

 swollen; endopodite forming slender digit. 



Leg 1 of type met with in Laophontidae, strongly developed. 

 Coxa and basis large, basis with external spinulose seta and small 

 internal spine. Exopodite 3-segmented, segment 2 without internal 

 seta, segment 3 with 5 appendages. Endopodal segment 1 styliform, 

 with short internal subapical seta. 2nd endopodal segment swollen, 

 fused with big, claw-shaped 3rd segment; strong seta occurs near 

 line of fusion. Endopodite thus becomes powerfully developed 

 clasping organ. Legs 2 to 4 with 3-segmentcd exopodites and 

 endopodites. External marginal spines of exopodite lanceolate. 

 The setal formula is: 



Some of setae of endopodite and exopodite spatulate. 



Leg 5 with ovate exopodite, bearing 6 setae. Baso-endopodite 

 short, with 5 setae. External lobe normally developed, with fine 

 seta. 



Females carry single, heavily encased egg. 



Males unknown. 



Type and sole species: Pholenota spatnlifera, new species. 



Remarks. — I am completely puzzled by the curious combination 

 of characters which the type of this new genus, P. spatulifera, pre- 

 sents. The structure of leg 1 is exactly as found in the Laophontidae, 

 particularly in the NormaneUinae. There is, nevertheless, no 



