116 Allï. II. — A. IZUKA : 



Habitat : — Gulf of Agu in Prov. Sliima (!) ; Ycnoshima in Prov. 

 Sagami. 



Eunice inlcroxyrlon Marcnzollcr. 



PI. XIII, fig. 10. 



1879. Eunice micropriou, Marenzeller. Siidjap. Annel., p. 27, Taf. V, 

 fig. 1. 



Body consisting of 134 — 144 segments ; widest at about the 

 20th segment, where it measures 8 mm. including parapodia ; 

 tapering toward both ends ; the breadth of peristomium equal to 

 that of about the 140th segment ; length 140 — 165 mm. 



Prostomium with 5 tentacles, the bases of which are covered 

 by the anterior margin of the first segment. The median 

 longest tentacle reaches to the 6th segment ; the inner laterals to 

 the 5th ; the outer laterals a little shorter than the latter. Eyes 

 2, each placed behind the base of the outer lateral tentacle. 

 All the tentacles faintly annulated. 



The first segment long, being longer than the succeeding 3 

 segments taken together ; the second scarcely J the length of the 

 tliird or the first parapodiated segment, provided with 2 tentacular 

 cirri, which extend a little beyond the anterior margin of the 

 first segment. 



Parapodium short, with 2 black acicula, which extend far 

 beyond lateral margin of parapodium. Bristles in the dorsal 

 bundle are of winged -setose and pectinate kinds ; the ventral 

 bundle consists of compound bristles with short, stout, 2 -hooked 

 end-piece, having narrow guard (fig. 10). Dorsal cirrus long, 

 broad-based and slightly annulated at wide intervals. Its length 



