FISHERY BULLETIN: VOL, 77, NO. 4 



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FIGURE 4. — Hypoconcha sabulosa: ventral view (A) and outline of biting survace (a) of stage zoea! I mandible: ventral view of zoeal 

 stage in mandible iB); ventral view (C) and dorsal view (c) of megalopa mandible. 



nal setae and two pairs of subterminal setae, prox- 

 imal segment with two setae; basal endite with 

 four or five stout cuspidate setae and five to seven 

 finer plumose or plumodenticulate setae; coxal 

 endite with six or seven stout multidenticulate 

 setae and seven to nine finer setae. 



MAX2 (Figure 6C) — With two-segmented en- 

 dopodite, 5 setae on terminal segment, 3 or 4 setae 

 on proximal segment; bilobed basal endite with 6 

 setae each lobe; bilobed coxal endite with 4 or 5 

 setae distal lobe, 14-17 setae in three rows proxi- 

 mal lobe (3 subterminal setae on opposite surface 

 not figured); scaphognathite with 25-28 plumose 

 setae. 



MXPl (Figure 7C) — Same as stage II but with 

 one additional seta on endopodite lateral margin. 



MXP2 (Figure 7G) — Exopodite with six or 

 seven plumose setae; endopodite as in stage II but 

 with additional seta on lateral margin. 



MXP3 (Figure 7J) — Exopodite with six or 

 seven plumose setae; endopodite with two distinct 

 segments, four setae on terminal segment, one or 

 two setae on proximal segment. 



PI to P5 (Figure IC) — With pronounced exten- 

 sion beyond carapace; first pereiopod (Figure 7N) 

 biramus, exopodite with six terminal setae; re- 

 maining pereiopods uniramus with segmentation 

 evident and some simple setae or hairs. 



Megalopa 



Carapace (Figure 8A) dorsoventrally flattened 



with circular anterior margin and concave pos- 

 terior margin; hepatic carapace margin with 

 seven to nine distinct spines on each side, median 

 anterior region depressed leading to short tapered 

 rostrum; ventroposterior margins with short 

 plumose setae; surface generally covered with 

 numerous hairs, spinules, and plumose setae; 

 eyestalk with distinct anterodorsal spine. 



Abdominal segments with distinct lateral 

 spines on segments two to six; dorsal surface with 

 numerous hairs and spinules. 



Telson (Figure 2D) nearly square, covered with 

 hairs; anterior margin straight to slightly concave 

 with 8 plumose setae; articulated uropods, en- 

 dopodite with 2 plumose setae, exopodite with 13 

 or 14 plumose setae. 



ANl (Figure 3D) — With three basal segments; 

 outer ramus with five segments, setation from tip 

 to base, three simple setae, three or four aesthe- 

 tascs, four aesthetascs, no setae; inner ramus 

 with three segments with 2-3-2 setae. 



AN2 (Figure 3H) — Basipodite with palp, 

 numerous spines and three or four plumose setae; 

 endopodite with 10 segments. 



MN (Figure 4C, c) — With outer cutting edge 

 and depressed center; palp three-segmented with 

 five processes on distal segment. 



MAXl (Figure 5D) — With three-segmented 

 endopodite, setation reduced to 6 setae as shown; 

 basal endite with 7 cuspidate setae, 8 or 9 

 plumodenticulate setae, and 3 plumose setae on 



856 



