FISHERY BULLETIN VOL 



equal to or surpassing protopodal process, about 

 0.5 X length of exopodite. 



Mandible (Figure 2F). Incisor process stouter, 

 dentation irregular. Left molar process with 3 ir- 

 regular teeth along inner margin to junction with 

 incisor process, right molar process with 1 tooth. 



Maxilhde (Figure 2G). Setae on endopodite and 

 coxal endites unchanged; basal endite now with .5 

 spines and 2 setae, plus 1 long feathery seta later- 

 ally. 



Maxilla (Figure 2H). Setae on endopodite; coxal 

 and basal endites unchanged. Scaphognathite 

 with 1 1 plumose setae, no elongate distal process. 



Maxilliped 1 (Figure 21), Coxo-, basi-, and en- 

 dopodites unchanged. Exopodite with 6 natatory 

 setae. 



Maxilliped 2 (Figure 2J). Coxo-, basi-, and en- 

 dopodites unchanged. Exopodite with 6 natatory 

 setae. 



Color. Darker orange-brown, though chroma- 

 tophore number and position unchanged from first 

 stage; eyes with an orange-rose hue. 



Third Zoeae 



Carapace length: 0.80 mm. 

 Number of specimens examined: 10. 



Carapace (Figure 3A, B). Cephalothorax 

 inflated, posterolateral border with 8 (7-9) setae. 

 Three pair of minute setae alongdorsal midline as 

 in stage II. Dorsal and rostral spines increased in 

 length, usually 3.5^ longer than lateral spines. 

 Buds of third maxillipeds and thoracic appendages 

 barely visible through carapace. 



Abdomen (Figure 3 A, B). Now with 6 somites, 

 sixth with 2 dorsal setae posteriorly but no spines. 

 Posterolateral spines of third, fourth, and dor- 

 solateral spines of fifth somites elongate. Three 

 dorsal setae on first somite. 



Tel son (Figure 3C). Dorsal and lateral spines on 

 median portion of furcae miniscule. Spination and 

 setation of posterior margin as before, occasion- 

 ally an additional median seta. Furcae >0.75x 

 length of telson. 



Antennule (Figure 3D). Similar in form to second 

 stage; terminal aesthetascs usually 4 (3-5): 3 long. 

 1 short. 



Antenna (Figure 3E). Endopodal bud enlarged. 

 Exopodal spine extended slightly beyond slender 

 protopodal process, and equal in length to exopo- 

 dite. 



Mandible (Figure 3F). Incisor process similar in 

 form to second stage, 3 or 4 irregular teeth on left 

 side, 2 on right. 



Maxillule (Figure 3G). Basal endite with I addi- 

 tional seta, now 5 spines, 3 setae, plus lateral seta 

 as before. Setae of endopodite and coxal endites 

 unchanged. 



Maxilla (Figure 3H). Endopodal setation as in 

 stage II: basal endite lobes 5,5; coxal endite lobes 

 usually 5,4 (6,4). Scaphognathite with 19 or 20 

 marginal plumose setae. 



Maxilliped 1 (Figure 31). Similar in form to sec- 

 ond stage; coxo- and basipodal setae unchanged; 

 exopodite with 8 natatory setae; endopodite usu- 

 ally with an additional lateral seta on the distal 

 segment (formula now 3,2,1,2,5-1-1; rarely 

 3,2,1,2,4 + 1). 



Maxilliped 2 (Figure 3J). Similar in morphologv- 

 to second stage; exopodite with 8 natatory setae. 



Color. Two orange chromatophores ventrally on 

 first through fifth abdominal somites; other 

 chromatophores as before. Entire zoea dark 

 orange-rose; rose coloration concentrated on pos- 

 terior and posterolateral margins of cepha- 

 lothorax. Lateral carapace and abdominal spines, 

 now pale orange-rose. Dorsal carapace spine clear 

 except for orange-rose hue at base and along pos- 

 terior margm. Mandible and labrum dark brown. 

 Eyes with rose coloration concentrated dorsally. 

 Abdominal somites 1 through 5 darker orange- 

 brown than in previous stage. Sixth somite pale 

 orange-brown. 



Fourth Zoeae 



Carapace length: 1.0 mm. 



Number of specimens examined: 10. 



Carapace (Figure 4A, Bl. Cephalothorax 



364 



