122 



PROCEEDINGS OF THE NATIONAL MUSEUM 



inward, inner surface with 12 denticulations. Female postantennal 

 process (fig. 44c) short, clawlike, with 2 nodules on proximal surface 

 and additional nodule just posterior to clawlike projection, all 3 

 nodules with several hairlike processes. Postantennal process of 

 male (fig. 44(Z) much longer than that of female, recurved; nodules 

 and hairlike processes as in female. Female postoral process (fig. 

 44c) long, spinelike; male (fig. 44c?) as in female except for small, 

 knoblike projection on outer medial surface. Female and male max- 

 illule (figs. 44c, d) nodular, with 3 setules. Female and male maxilla 

 (fig. 44e) 2-segmented, situated lateral and slightly posterior to post- 

 oral process. First segment slightly shorter than second, second 

 rodlike, with fine membrane on posterior surface of distal half of 

 segment and 2 saber-like terminal processes. Innermost terminal 

 process approximately Ij^ times the length of outermost, with fine 

 membrane along inner margin; outermost process with finely frilled 

 membrane along both margins. 



Female and male maxUliped (fig. 44/) 2-segmented, situated pos- 

 terior and medial to maxilla base. First segment strongly developed, 

 narrow proximally and distally, broad medially, with small, spinelike 

 projection from proximal half of inner surface. Second segment 

 short, distinct from clawlike terminal process, with small, setule-like 

 accessory process from distal inner surface. Female and male sternal 

 furca (fig. 44^) situated on median longitudinal axis posterior to 

 maxUliped bases. Tines diverging, rounded distally. 



Second segment of exopodite of first leg without large plumose 

 setae along inner margin but with 3 minute projections in position 

 normally occupied by setae. For nature of legs and armature, see 

 figures 45a-g and table 16. 



• More than one hairlike process. 



t Very fine denticulations on membrane. 



Discussion. — The synonymy does not show several references 

 included by Shiino (1959b) (Rathbun, 1884; Wilson, 1935a), and 



