EXPLANATION OF PLATES 



(All figures drawn with camera lucida) 

 PLATE 4 

 Fig. 1. Dorsal view of anterior portion of Euphrosyne calypta. X 10. 

 Fig. 2. Tip of dorsal seta of Euphrosyne calypta. X 160. 

 Fig. 3. Tip of ventral seta of the same. X 160. 



Fig. 4. Tip of ventral seta of Euphrosyne muUibranchiata. X 160. 

 Fig. 5. Tip of dorsal seta of Euphrosyne muUibranchiata. X 160. 

 Fig. 6. Posterior segments of Euphrosyne calypta, showing caudal cirri. X 10. 



Ventral view of anterior end of Euphrosyne calypta. 



Branchiae of Euphrosyne multibranchiata. X 20. 



A branch of the gills of Euphrosyne muUibranchiata. X 20. 



Three gill-branches of Euphrosyne muUibranchiata, showing the 

 dorsal cirrus and the setae in their relative positions. X 20. 



Caruncle of Euphrosyne multibranchiata. X 10. 



Ventral view of anterior end of Euphrosyne multibranchiata. X 10. 

 Figs. 13-14. Branchiae of Euphrosyne calypta. X 75. 

 Fig. 15. Branchiae of Eurythoe spirocirrata. X 10. 

 Fig. 16. A branchlet of the preceding. X 20. 

 Fig. 17. Twentieth parapodium of Eurythoe spirocirrata. X 20. 



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