ERKANTIAÏE POLYCHAETA OF JAPAN. 239 



Prostomiiim lU-ringed, its lengtli about 3 times the breadth. 

 Tentacles short. 



Tlie two anteriormost pairs of parapodia rudimentary ; 

 first dorsal cirrus wanting. Parapodia in the anterior and middle 

 regions of body (fig. 1) bear two anterior and two posterior ligulse, 

 of which the former are longer and more pointed than the latter ; 

 ventral cirrus somewhat conical and pointed, and dorsal cirrus 

 elliptical in outline. Parapodia (fig. 2) in the posterior region of 

 body bear two long and sharp pointed anterior ligulœ ; and of 

 tlie posterior ligulaj, the superior one is a little shorter than the 

 two anterior, while the inferior one is very sliort and rounded at 

 end. A^entral cirrus long and pointed. Dorsal cirrus oblong, 

 placed at base of parapodium. Dorsal ramus with simple bristles, 

 the ventral with articulated bristles in which the blade is finely 

 serrated. 



Gill simple, slender, situated on tlie anterior side of parapodium 

 at about the base of tlie distal .^ of its length ; often invisible 

 ill posterior view, especially in alcoholic specimens. 



Anal segment somewhat longer than the two preceding seg- 

 ments taken togethc^r ; anal ciiri very long and slender. 



Proboscis short ; its papill.e either conical or hemispherical 

 with broad base, the former form being more numerous than the 

 latter. Triangular appendage of jaws well -developed. 



There exists not angible distinction between G, goesi Malmgeen 

 and (/. dedpiem ^MafvENZeller. The specimens came from shallow 

 water as well as from a depth of GO fathoms or more. 



Ilabitat : — Misaki (!) ; Gulf of Miya (Maeenzellee) ; Gulf of 

 Tokyo (!) ; Watanoha in Prev. Pdkuzen (!) ; AYakkanai in Prov. 

 Kitami ; Suruga Bay, G-j fathoms and Sendai Bay, 18 fathoms 

 (•' Albatross "). 



