10 AET. IL — A. TZÜKA : 



under the microscope, but is smooth to the naked eye, with the 

 exception of the posterior part, wliich is studded on the surface 

 with very distinct, though low, pale, conical papillae, and thus 

 presents a somewhat pustulated appearance. There is no trace of 

 cilia on edges. In some specimens the elytra are chestnut -brown 

 in colour, excepting the white spot already mentioned. 



Dorsal ramus of parapodium feebly developed, bearing a series 

 of pale yellowish, slender, outwardly directed bristles (fig. 2) with 

 fine serration, and also a group of short, curved and serrated 

 bristles (fig. 3), directed posteriorly and laterally. Ventral bristles 

 (fig. 4) horny yellow in colour, directed laterally and somewhat 

 posteriorly. 



First ventral cirrus nearly equal in length to ventral ten- 

 tacular cirrus ; it is situated on a distinct cirriphore. The cirri of 

 other parapodia are of a conical form, tapering to thin end ; they 

 are short, scarcely reaching to tip of ventral rami. They show 

 each a brownish band in the middle of their length. 



Ventral (nephridial) papillae commence to occur on the 7th 

 parapodium, each with an aperture at the bulbous end. 



Ihe bases of anal cirri unite behind the anus, which is thus 

 situated on the dorsum opposite the penultimate parapodia. 



Proboscis, when fully protruded, reaches a length about equal 

 to that of the anterior 8 parapodiated segments taken together. 

 It is provided with 2 strong jaws and 13 marginal papillae on both 

 dorsal and ventral lips. 



Habitat : — Tomo Harbour in Prov. Bingo (!) ; Sanbongi in Prov. 

 Sanuki (Mr. K. Sato) ; Gulf of Agu in Prov. Shima (!) ; Kanazawa 

 in Prov. Musashi (!) ; Misaki in Prov. Sagami (!) ; Azamushi, at the 

 head of Aomori Gulf (!) ; Sakhalin (Prof, I, Ijima). 



