NO. 3574 COPEPOD CRUSTACEANS — LEWIS 53 



segment short, irregular, with triangular projection from lateral 

 posterior surface; second segment approximately 4 times the length 

 of first, broader proximally than distally. Third segment fused with 

 clawlike terminal process, with flabby, setalike accessory process 

 from proximal surface and elongate, setalike accessory process from 

 medial third, at break in sclerotization suggesting distal end of seg- 

 ment and proximal end of terminal process. First segment of male 

 antenna (fig. 20c) similar to that of female although triangular pro- 

 jection smaller; second segment with pair of minute, lappet-like 

 projections medially and small adhesion surface (not figured) on slight 

 swelling of distal posterior surface. Third segment separable from 

 clawlike terminal process, bearing same accessory processes as in 

 female; terminal process strongly curved distally, mth small, pointed 

 secondary projection proximally. 



Female and male mandible (fig. 206) 2-parted, first part short, 

 tapered distally, \vith indistinct break at beginning of taper. Second 

 part elongate, flattened distally, mth indistinct break just proximal 

 to flattened part, distal inner surface with 12 denticulations. Female 

 and male postantennal process (fig. 206) consisting of pair of nodules, 

 each with several hairlike processes, just lateral to padlike swelling 

 situated lateral to antenna base. Female and male postoral process 

 (fig. 206) spinelike, with broad base and laterally curved tip, not as 

 elongate as in mature adult specimens. Female and male maxillule 

 (fig. 206) nodular, bearing 2 setules and 1 seta. Female and male 

 maxilla (fig. 20d) 2-segmented, situated lateral to postoral process. 

 First segment slightly less than four-fifths the length of second, 

 excluding terminal process; second elongate, ^vith small, fan-shaped 

 projection (fig. 20e) from outer surface medially, 2 additional mem- 

 branes present distally; terminal processes setalike, innermost more 

 than twice the length of outer, with, membranous band and fine plu- 

 mosities along margm. 



Female maxilliped (fig. 20/) 2-segmented, situated posterior and 

 slightly medial to maxilla base. First segment strongly developed, 

 with pair of small, shelflike projections from posterior medial siu-face; 

 second segment small, distinct from long, clawlike terminal process, 

 bearing setalike accessory process from inner distal sm^face. Male 

 maxilliped (fig. 20g) sunilar to that of female although shelflike pro- 

 jections of first segment smaller and proximal end of segment more 

 complex, "svith heavily sclerotized, clawlike projection from proximal 

 inner surface. 



Female sternal fiu-ca (fig. 20h) V-shaped, overlapping interpodal 

 plate of first thoracic legs. Male sternal furca (fig. 20i) simflar to 

 that of female although tines not as regular and not appearing as 

 heavily sclerotized. 



