FISHERY BULLETIN: VOL 77. NO 1 



0. 5 mm 



Figure 5. — Stage V zoea of Pandal us borealis: A, rostrum, right side; B.antennulelflagellaonlyl, ventral; C, antenna, ventral; D, first 

 pereopod (distal segments only), dorsal; E, second pereopod idistal segments onlyi, dorsal; F. second abdominal somite and pleopod. 

 right side; G. telson, dorsal. 



and right second pereopods 20-25 and 10-13, re- 

 spectively. Pleopodal setae extend along entire 

 lateral margins of both flagella; tips of appendices 

 internae bear several distinct cineinnuli. Length 

 of second pair of pereopods, excluding setae, 1.5-2 

 times height of second abdominal segment. Telson 

 (Figure 6B) shows, for first time, shape and spina- 



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tion similar to adult; lateral margins converge 

 posteriorly but widen slightly at junction with 

 posterior margin; typically four spines on each 

 lateral margin but in this stage and Stages VII 

 and VIII one lateral spine often lacking. Posterior 

 margin of telson rounded but not as much as in 

 Stage VII; bears 3 + 3 stout spines and sometimes 



