KNIGHT: LARVAL DEVELOPMENT OF EUPHAUSIA EXIMIA 



single additional spine on one side only, was found 

 on 48^f of 87 larvae examined for this feature. 



FURCILIA V (FIGURES 7E, 9B). — Carapace 



with or without a few tiny lateral denticles on 

 rostrum. 



Antennule with lateral spine of peduncle seg- 

 ment 1 slightly longer than or equal to length of 



0.5 mm 



a-g 



Figure 7. — Euphausia eximw, northern form, dorsal view: a-f, furcilia I- VI; g, juvenile I; hl-3, typical development of dorsal lappet on 



segment 1 of antennular peduncle in furcilia V-VI and juvenile I 



323 



