EERANTIATE POLYCHAETA OF JAPAN. 251 



ligula a little broader than proximal parts of anterior lignla, with 

 roundisli end, extending a little beyond proximal parts of anterior 

 lignla ; only compound bristles present ; ventral cirrus long and 

 conical, situated almost parallel to distal lanceolate parts of 

 anterior ligula ; dorsal cirrus large and cylindrical with rounded 

 end, arising a short distance dorsad from base of parapodium. 

 Ventral cirrus in anteriorly placed parapodia shorter than that 

 of more posteriorly situated ones, pointing in infero-lateral direction. 



Anal segment short, with two small anal cirri. 



Proboscis short and somewhat barrel -shaped, measuring 5 — 6 

 mm. in length when fully protruded. Jaws well developed, 

 moderately curved, with somewhat broad triangular process and 

 long rod-like appendage; papilla? (fig. 15) on tlie whole surface 

 of proboscis, long and slender. 



Habitat : — Yenoura in Prov. Suruga (!) ; Ujina in Prov. Aki ; 

 Misaki (!). 



RemarlxS : — Most of the specimens collected at Misaki in the 

 months of March and April contained nearly ripe reproductive 

 elements (eggs and spermatozoa). 



Tukvo, Marcli 30th, 1910. 



