450 FLORENCE EtJOHANAN. 



Fig. 10. — Ventral view of head aud Hi-st four segments of tke same. Palps 

 turned aside to show the underlying paired prostomial tentacles. 



Figs. 11a and 11b. — Two transverse sections of a " branchial" filament of 

 Eupompe australiensis. 



Tig. 12, — Transverse section of a branchial filament of an Amphinome 

 (Eurythoe). bl. Blood-vessels. Other letters as in Fig. 7. 



Fig. 13. — Transverse section of one of the filaments of a branchia of 

 Chloeia flava. 



