98 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



third segment fused with clawUke terminal process, bearing 2 setule- 

 like accessory processes, 1 at indication of division between segment 

 and terminal process, second from proximal inner surface. Male 

 antenna (fig. S5d) basically similar to that of female although segments 

 and processes relatively longer and first 2 segments bearing adhesion 

 surfaces. 



Female and male mandible (fig. 35c) 4-parted, distalmost part 

 curved inward, with 12 denticulations on inner surface. Female post- 

 antennal process (fig. 35c) consisting of short, spikelike projection, 

 just lateral to antennal base, and 3 nodules, each with several hairlike 

 processes; 2 nodules situated on base of spikelike projection, third 

 just posterior to base. Male postantennal process (fig. 35c) similar to 

 that of female although projection slightly thicker distally. Female 

 postoral process (fig. 35c) spike shaped, with small spine projecting 

 from distal half of inner surface. Male postoral process (fig. 35/) simi- 

 lar to that of female except with lappet-shaped accessory projection 

 and adhesion surface. Female and male maxillule (fig. 35c) nodular, 

 bearing 3 setules distally. Female and male maxilla (fig. S5g) 2-seg- 

 mented, situated lateral and slightly posterior to postoral process. 

 First segment approximately three-fourths the length of second, both 

 elongate. Second segment with large, oval, membranous projection 

 from distal half of inner surface, with 2 saber-shaped terminal proc- 

 esses. Innermost terminal process approximately IK times the length 

 of outermost, both with very fightly frilled membranes along both 

 inner and outer margins. 



Female maxilliped (fig. 35A) 2-segmented, situated posterior and 

 slightly medial to maxilla base. First segment strongly developed, 

 with elongate proximal projection serving as articulation and muscle 

 attachment surface. Second segment short, incompletely fused with 

 clawlike terminal process, bearing small, setule-like accessory process 

 from inner surface, at junction of segment and terminal process. 

 Male maxilliped similar to that of female except first segment with 

 transverse ridge on distal half of inner surface. Female and male 

 sternal furca (fig. 35i) situated between and posterior to maxilliped 

 bases, associated with heavily sclerotized transverse band on cepha- 

 lo thorax. Tines curving medially slightly toward distal ends, sinus 

 U-shaped, lateral surface of tines thinner than medial and inner surfaces. 



For nature of legs and armature, see figures 3Qa-h and table 13. 



Figure 36. — Mz(^taj-/oioJifj Wilson, 1911, right thoracic legs, anterior view: fl, first; b, distal 

 end of second segment of exopodite of first; c, second; d, third; e, exopodite of third (pos- 

 terior view);/, first segment of exopodite of female third; g, male fourth; h, protopodite of 

 female fourth. 



