FISHERY BULLETIN: VOL. 80, NO. 2 



Pleopods (Fig. 1 A).— Absent on first somite in all 

 larval stages; in Stage I, present on somites 2-5 as 

 distinct buds. Pleopod 6 absent until Stage III. 



Abdomen and telson (Fig. 1A, J).— Abdomen 

 with five somites and telson (somite 6 fused with 

 telson until Stage IV). Somites 2-5 with pair of 

 posterolateral spines, four short spines along 

 posterior margin, pair of hairs near dorsopos- 

 terior margin. Telson slightly emarginate 

 posteriorly, with 11 + 11 (rarely 10 + 11) densely 

 plumose setae. Ninth pair of setae on telson 

 longest, almost one-third telson width. All setae 

 jointed with the telson except ninth pair; ninth 

 pair fused with telson. Minute plumose seta 

 between setal pairs 10 and 11 (Fig. IK). Except 

 outer pair of setae, setae with setules. Setules 

 along terminal margin between bases of setae. 

 Without uropods in all larval stages. Anal spine 

 absent in all larval stages. 



STAGE II ZOEA 



Mean total length of Stage II zoeae, 7.5 mm 

 (range 7.0-8.0 mm, 10 specimens). Rostrum and 

 carapace same shape as in Stage I. Eyes stalked. 



Antennule (Fig. 2A).— Large plumose seta and 

 three small simple setae at distal joint of unseg- 

 mented peduncle. 



Antenna (Fig. 2B).— Two-segmented flagellum 

 extends slightly beyond plumose setae of scale. 

 Antennal scale with 9 (rarely 10) heavily 

 plumose setae along terminal and inner mar- 

 gins. 



Mcmdibles. — Essentially same as in Stage I 

 except with a few more teeth along anterior 

 margin and palp slightly larger. 



Maxillule. — Same as in Stage I except tip of basi- 

 podite somewhat more rounded. 



Maxilla.— Scaphognathite (Fig. 2C) with 20 

 (sometimes 21) plumose setae along inner and 

 outer margins; proximal expansion distinct, 

 naked. Endopodite, basipodite, or coxopodite 

 same as in Stage I except coxopodite occasionally 

 with five setae on proximal lobe. 



Maxillipeds. — Similar to Stage I maxillipeds, 

 but exopodites of maxillipeds two-segmented; 

 pairs 1, 2, and 3 with 9, 9, and 8 natatory setae, 

 respectively. 



Pereopods (Fig. 2D, pereopod 1).— Chelae of 

 pereopod 1 similar to pereopod 1 of adult but 

 without spines, setae, or teeth. Pereopods 2-5 

 same as in Stage I except longer and pereopod 5 

 four-segmented. 



0.5 mm 



L 



0.5 mm 



0.25 mm 



0.25 mm 



Figure 2.— Stage II zoea of Litkodes aequispina: A, antennule, dorsal; B, antenna, ventral; C, maxilla (scaphognathite), dorsal; D, 



pereopod 1, lateral. 



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