FISHERY BULLETIN: VOL. 77, NO. 3 



slightly emarginated and bears 6 + 6 spines dis- 

 tal ly. Transverse hinge of exopodite of uropod not 

 evident. 



STAGE VII ZOEA 



Total length of Stage VII zoea 13.0 mm ( 1 speci- 

 men). Rostrum (Figure 7A) curved slightly up- 

 ward, slightly less than one-half length of 

 carapace; bears seven teeth dorsally, tooth near 

 tip not developed. No change in number of gill 

 structures from Stage VI. 



PLEOPODS.— Exopodite and endopodite of 

 pleopods tipped by a few setae; no appendices in- 

 ternae. Second pleopod (Figure 7B) about two- 

 thirds height of second abdominal somite. 



TELSON (Figure 7C). — Lateral margins essen- 

 tially parallel, each bears two spines. Transverse 

 hinge of exopodite of uropod partially complete. 



COMPARISON OF LARVAL STAGES 



WITH DESCRIPTIONS BY 



OTHER AUTHORS 



SECOND PEREOPOD.— Terminal spine of dac- 

 tylopodite may bear two spines at base instead of 

 one spine, as in Stage VI; carpopodites unseg- 

 mented. 



The only previously published description of 

 larvae of Pandalus tridens is that of Ivanov (1971) 

 who described and figured Stage I zoeae reared 

 from known parentage. My description of the 



Figure 7. — Stage Vll zoea ofPandalus tridens: A, rostrum, right side; B, second pleopod, lateral; C, telson, 



dorsal. 



636 



