FISHERY BULLETIN: VOL. 80, NO. 2 



Figure 14.— Sergestes similis. Abdomen, lateral view: a, zoea I; b, zoea II. 



3-segmented with 3-3-4 setae on leg 4, rarely 4 

 setae on segment 2, and 2-3-4 setae on leg 5; bases 

 with 1 seta, coxae nonsetose. 



Pleopods (Fig. 15a) present on abdominal seg- 

 ments 1-5 and variable in size within stage; 

 exopods nonsetose decreasing in length from 

 pleopod 1 to 5; pleopod 5 with nonsetose endopod 

 about two-thirds length of exopod, pleopod 4 

 with small bud of endopod, pleopods 2 and 3 

 sometimes with some swelling in position of 

 endopod. 



Uropods with rami articulated; protopod with 

 lateral spine and posterior projection (Fig. 14a); 

 exopod and endopod long, slender, and fringed 

 with plumose setae except proximal to smooth 

 spine on lateral margin of exopod. 



Zoea II (Figs. 14b, 17) 



Body length: 4.42 mm (0.20). 

 Carapace, abdomen, and telson (Fig. 15f) with 

 armature as in preceding stage; spines shorter 



relative to size of larva and lateral spines of 

 abdominal segments 1 and 2 without long pos- 

 terior spinules. 



Antennule (Fig. 2i) with peduncle bearing 16- 

 19, usually 17 or 18, marginal plumose setae and 

 small setae in clusters of 3-4-3-1-3; outer 

 flagellum with 1 distal seta and usually unseg- 

 mented, sometimes constricted at two points 

 distal to tier of 6 aesthetascs, rarely with weak 

 sutures; inner ramus without spines. 



Antenna (Fig. 3g) with scale armed with long 

 subterminal spine on outer margin bearing 

 spinules, a small subterminal ventral seta, and 

 14 or 15 marginal plumose setae, terminal setae 

 no longer stout; flagellum long, with 19-25 seg- 

 ments in three reared larvae, terminal segment 

 with 2 spines and 3 setae, 1 seta projects laterally 

 from each side. 



Mandibles (Fig. 4h) with armature un- 

 changed; palp larger than in zoea I, unseg- 

 mented and nonsetose. Labrum with short 

 remnant of anteroventral spine. 



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