Maxilliped (Fig. 5e).— Three-segmented, 50 ^m 

 long, with small pointed third segment weakly set 

 off from second segment and bearing 2 small se- 

 tae Relative position of maxillipeds as in Figure 

 5f. 



Leg 5 (Fig. 5g).— Two-segmented. First segment 

 set off from body. Second segment 55 x 29 ^m. Ar- 

 mature similar to female. 



Leg 6 (Fig. 5d).— Represented by single seta. 



Copepodid V, female 



Figures 5h-m, 6a-c 



Size— Length 1.62 mm (1.42-1.87 mm) and greatest 

 width 0.41 mm (0.37-0.44 mm), based on 13 speci- 

 mens. 



FISHERY BULLETIN: VOL. 84, NO. 2 



Leg 6 (Fig. 5i).— Represented by 1 seta with minute 

 spinule near its insertion. 



Copepodid V, male 



Figure 6a-c 



Size— Length 1.41 mm (1.22-1.57 mm) and greatest 

 width 0.34 mm (0.31-0.39 mm), based on 30 speci- 

 mens. 



Body form.— As in female, with same number of 

 body segments. Similar arrangement of ventral spin- 

 nules on urosomal segments (Fig. 6a). 



Maxilliped (Fig. 6b).— Four-segmented. First seg- 

 ment with 1 inner seta. Long second segment and 

 short third segment unarmed. Pointed fourth seg- 

 ment with 2 setae 



Body form (Fig. 5h).— Nine body segments in- 

 cluding and posterior to segment bearing leg 1. Seg- 

 ment of leg 5 and more posterior segments as in 

 Figure 5i. 



Caudal ramus (Fig. 5i).— Noticeably longer than in 

 preceding instars. 



First antenna (Fig. 5j).— Incompletely 6-segment- 

 ed. Armature: 5, 15 + 9, 4 + 1 aesthete, 2 + 1 

 aesthete, and 7 + 1 aesthete 



Maxilliped (Fig. 5k).— Reduced to slightly raised 

 lobe with 2 small setae 



Leg 1.— Both rami 3-segmented. Armature (as in 

 adult): coxa 0-0; basis 1-1; exopod 1-0; 1-1; 111,5; endo- 

 pod 0-1, 0-1; 1,5. 



Legs 2 and 3.— Both rami 3-segmented. Armature 

 (as in adult): coxa 0-0; basis 1-0; exopod 1-0; 1-1; 111,6; 

 endopod 0-1; 0-2; 111,3. 



Leg 4 (Fig. 51).— Both rami 3-segmented. Arma- 

 ture: coxa 0-0, basis 1-0; exopod 1-0; 1-1; 111,5; endo- 

 pod 0-1; 0-1; 111,2. Distalmost spine on exopod more 

 slender than other exopod spines; outer of 2 terminal 

 spines on endopod only about one-half length of 

 inner terminal spine 



Leg 5 (Fig. 5m).— Second segment 99 x 49 j^m. 

 Few outer spinules on first segment. Two groups of 

 spinules on inner side of second segment. Principal 

 armature as in Copepodid IV. 



236 



Legs 1-4.— Similar to those of female Endopod of 

 leg 2 (Fig. 6c) not showing sexual dimorphism. 



Leg 5.— As in female; second segment 75 x 31 /^m. 



Leg 6.— Represented by single seta with few very 

 small spinules near its insertion. 



Adult Female 



Figures 6d-m, 7a-l, 8a-e, 9a-j 



Size-Length 2.18 mm (1.92-2.45 mm) and 

 greatest width 0.52 mm (0.47-0.56 mm), based on 10 

 specimens. Dorsoventral thickness at level of leg 1, 

 0.25 mm. 



Body form (Fig. 6d, e).— Elongate and flattened 

 dorsoventrally. Nine body segments including and 

 posterior to segment bearing leg 1. Urosome 5-seg- 

 mented (Fig. 6f). Segment bearing leg 5 220 x 319 

 ^m in dorsal view, smooth on dorsal surface, but ven- 

 tral surface with transverse groups of spines (Fig. 

 6g); dorsally this segment with posterodorsal hump 

 (Fig. 6e, h). Genital segment 270 x 264 ^m, wider 

 in anterior half than in posterior half. Three post- 

 genital segments from anterior to posterior 143 x 

 165, 143 x 160, and 200 x 143 /im. Genital areas 

 situated dorsolateral^, each area (Fig. 6i) bearing 

 2 very small setae about 16 fim long. Ventral sur- 

 faces of genital segment and first and second post- 

 genital segments smooth. Anal segment ventrally 

 with few small spines at postero-outer corners, with 

 row of 5 spines on each side distally, and with 2 



