FISHEKY BULLETIN: VOL 77. NO. 1 



STAGE IV ZOEA 



Mean total length of Stage IV 13.0 mm (range 

 12.6-13.2 mm; 10 specimens). Rostrum (Figure 

 4A) bears four to eight but usually six teeth dor- 

 sally, no teeth ventrally; tip not bifid. No change in 



epipodite of first maxiliiped or pleurobranchiae 

 except slight increase in size. Epipodite on second 

 maxiliiped present as small bud. No mastigobran- 

 chiae. 



ANTENNULE (Figure 4B, inner and outer 



0. 5 mm 



0. 5 mm 



0. 5 mm 



0. 5 mm 



FK;l;ke 4. — Stage IV zoea nf Pandalus bumaUs: A, rostrum, right side; B. antennule (inner and outer flagella), ventral; C. antenna, 

 ventral; D, first pereopod i distal segments only), lateral; E, second pereopod (distal segments only), lateral; F, second abdominal somite 

 and pleopod, nght side; G, telson. dorsal. 



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