EEEANTIATE POLYCHAETA OF JAPAN. 203 



of body light greenish -brown, yellowish, or colourless and almost 

 translucent anteriorly, faintly straw-yellow in dorsal median 

 line, and with a dusting of brownish grains all over. The first 

 segment has a white bar or white grains. In many segments 

 the borders along segment-junctions are narrowly white or yellowish, 

 which colour in alcoholic specimens is generally changed into 

 madder brown. Proboscis long, transversely rugose behind tip, 

 which shows twenty papillae. 



In typical (the sixtieth) parapodium, the dorsal cirrus is sub- 

 vertical, broadly ovate, with acuminate tip, while the base is 

 subcordate. It is borne on a long pedicle. Setigerous lobe com- 

 paratively long and bifid. The translucent shaft of bristles with 

 distinct shoulder; the bevelled tip with spinigerous ridges ; the 

 terminal blade minutely serrated. Ventral cirrus is broadly 

 lanceolate, with somewhat acuminate tip, which does not quite 

 reach that of the setigerous lobe. 



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



Maniida caeca Moore. 

 PI. XXI, fig. 5. 

 1003. Eumida caeca, Moore. Proc. Acad. Nat. Sc. Pliilad., Vol. LV, 



p. 4-2<;. 

 Prostomium nearly circular, its postero -lateral region somewhat 



encroaclied upon by sides of peristomium. Eyes absent. Frontal 



tentacles short, shorter than the distance between them. Median 



tentacle very short, at extreme posterior margin of prostomium. 



Peristomium of aliout twice the width of prostomium but 



equalHng it in lengtli, encircling it as a prominent fold 



besides covering it on sides, but dorsally emarginated to 



