FISHERY BULLETIN: VOL. 80. NO. 2 



Postlarva I (Fig. 18a) 



Body length: 5.07 mm (0.26). 



Carapace with armature reduced, 2 pairs of 

 lateral spines of preceding phase missing or only 

 tiny remnants; rostrum, supraorbital, and 

 hepatic spines, and posterodorsal spine shorter 

 relative to length of carapace. Abdomen with 

 lateral spines of segments 1-5 and posterodorsal 

 spines of segments 1 and 2 small and without 

 spinules. Telson (Fig. 15g) with posterior fork 

 spines much shorter in relation to body of telson 

 than in zoeal phase, with spinules reduced and 

 with pair of plumose setae on inner margin near 

 base of fork; relative length of terminal setae and 

 fork spines vary within stage. 



Antennule (Fig. 2j) with peduncle 3-seg- 

 mented and fringed with marginal plumose 

 setae, basal segment with statocyst and lateral 

 spine; rows of small setae now situated on distal 

 margins of segments; outer flagellum with 10 

 segments, proximal segments 1-3 with 1-2-6 

 medioventral aesthetascs, 6 aesthetascs of seg- 

 ment 3 set proximally on small protuberance; 

 inner flagellum with 2 segments. 



Antenna (Fig. 3h) with subterminal lateral 

 spine of scale smaller than in zoea II, scale with 

 20-22 marginal setae; flagellum very long, about 

 2.6 times body length in one reared larva. 



Mandibles (Fig. 4i) with cutting edges smooth 

 between simplified incisor and molar processes, 

 left mandible with notch opposing incisor tooth 

 of right mandible; palp with 5-7 setae and some- 

 times indistinctly 2-segmented. Labrum without 

 spine. 



Maxillule (Fig. 6e) with endopod reduced to 

 small nonsetose rudiment and with tiny vestige 

 of exopod, basal and coxal endites with increased 

 numbers of setae. 



Maxilla (Fig. 7d) with endopod reduced to 

 small nonsetose rudiment; scaphognathite 

 (exopod) large with 17 or 18 marginal setae, 1 

 posterior seta relatively long; coxal and basal 

 endites bifid, medial lobes with 2-2-4-4 to 6 setae. 



First maxilliped (Fig. 8d) with small non- 

 setose exopod and endopod, coxa with medial 

 setae and small epipodite, basis with broad flat 

 medial lobe armed with setae along inner 

 margin. 



Second and third maxillipeds and legs 1-3 with 

 small nonsetose remnant of exopod. 



Second maxilliped (Fig. 9d) with endopod 

 long, 5-segmented, recurved at articulation of 

 merus and carpus, and armed with strong setae, 



articulation of ischium and basis indistinct if 

 visible; coxa with bud of epipodite. 



Third maxilliped (Fig. 12c) with endopod long, 

 5-segmented, and with strong marginal setae. 



Leg 1 (Fig. 12f) with clusters of strong barbed 

 setae at articulation of propodus and carpus, legs 

 2 (Fig. 16b) and 3 with small setose chela, leg 2 

 with small spine on lateral margin of ischium. 

 Leg 3 slightly longer than first maxilliped. Legs 

 4 and 5 (Fig. 16e) reduced to irregular, nonsetose 

 bifid rudiments. 



Pleopods (Fig. 15c) with setose exopods; 

 endopod of pleopod 5 setose, rarely endopod 4 

 with 1 or 2 terminal setae, as before endopods 

 increase and exopods decrease in length from 

 anterior to posterior pairs; protopod with 1 distal 

 seta on inner margin of pleopods 1-3; endopods 

 vary in size within stage. 



Postlarva II (Fig. 18b) 



Body length: 5.80 mm (0.20). 



Carapace and abdomen with armature 

 reduced in size, small posterodorsal spine of 

 carapace may be missing and dorsal spines of 

 abdomen segments 1 and 2 very small. Telson 

 (Fig. 15h) with posterolateral spines reduced in 

 length and usually with 3 pairs plumose lateral 

 setae in addition to terminal pair. 



Antennule with outer flagellum, in exuvia of 

 one reared larva, with about 17 segments and in- 

 creased number of aesthetascs on proximal seg- 

 ments; inner flagellum with 2 or 3 segments. 



Antenna with subterminal lateral spine of 

 scale smooth or with few spinules and reduced in 

 length, scale with 24-28 marginal setae. 



Mandibles with palp 2-segmented bearing 11- 

 14, usually 11 or 12, setae. 



Maxillule with endopod more distinctly 

 shaped; vestige of exopod not present. 



Maxilla with 25-27 setae on scaphognathite; 

 endopod larger than in preceding stage with 

 outer basal seta and sometimes inner seta; 

 medial lobes with setation of 2-3-5 to 8-8 or 9. 



First maxilliped with endopod, exopod, and 

 epipodite larger than in postlarva I, rarely 

 endopod slightly longer than exopod with some 

 indication of segmentation. 



Second and third maxillipeds and legs 1-3 

 without vestige of exopod; legs 1 and 2 with small 

 ischial spine; legs 4 and 5 (Fig. 16f) more 

 distinctly formed, nonsetose, and with leg 4 

 longer than leg 5. 



Pleopods 3-5 (Fig. 15d) with setose endopods, 



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