28 AET. II. A. IZÜKA : 



Avliitc, with a deep brown, sharply de lined nng on the basal half 

 of snbterminal bulb, the remaining half of it and the terminal 

 filament being white. 



Lateral tentacular ceratophore only § as long and a little more 

 than h as thick as median ceratophore ; style twice the length 

 of prostomium, the terminal filament making up nearly }j of the 

 length ; ceratophore dark brown, contrasting strongly with the 

 colourless prostomium, with a very narrow white terminal ring ; 

 styles coloured as that of median tentacle. Subtentacles reach 

 to base of terminal filament of median tentacle, their bases broad, 

 mostly concealed above by tentacular ceratophores, tapering rapidly 

 and ending in a short filament ; pale brown throughout. 



Tentacular cirri with styles similar to those of median ten- 

 tacle in form and colour, but with longer filament ; the dorsal 

 exceeds the ventral by the length of its filament and equals the 

 median tentacle in length. 



Body smooth. Nephridial papillae commence to occur from 

 the 8th segment in full grown specimens. The parapodium of 

 2nd segment is, as usual, shorter and its ventral cirrus longer than 

 that of the others, but is peculiar in the fact that it is widely 

 separated from the 3rd and projects forward on sides of mouth. 



Typical parapodium moderately developed, with short, thick, 

 obtuse ventral ramus and fairly well -developed dorsal ramus ; 

 ventral aciculum especially stout, the ventral ramus slightly 

 angulated at the point of its emergence. Dorsal cirri with slight 

 subterminal enlargement and delicate terminal filament ; each 

 dorsal cirrus marked at about the middle with a blackish 

 brown ring, so long as to reach just beyond tip of 

 ventral bristles. Toward the posterior end of body they 

 become more slender and lose the subterminal enlargement ; the 



