ERKANTIAÏE TOLYCHAETA OF JAP AN. 20 



lust three cirri diminish rapidly in length, and are carried hori- 

 zontally, behind, to<^^etlier with the pair of anal cirri, which, 

 though the largest of all, are otherwise similarly formed and 

 have a basal brown ring in addition to the middle one. 



Elytra in 18 pairs, borne on segments 2, 4, 5, 7, 



25, 27, 28, 30, 31, 33; the point of attachment lies a little 

 caudad of the middle of the long axis and somewhat toward the 

 antero- external border. A dense fringe of cilia extends for over 

 i the lateral margin of each elytron, principally along that part 

 which projects freely on the sides ; entire dorsal surface of 

 elytron thickly covered with small angulated or prismatic 

 papillae, which are very densely aggregated in a narrow zone con- 

 tiguous to the ciliated margin of elytron. 



Dorsal bristles colourless, in two groups ; the anterior group 

 of about G, very short and stout bristles with short smooth tip and 

 strongly serrated convex margin (PI. Ill, fig. 12) ; the posterior group 

 more ventrally situated, consisting of more numerous, relatively 

 slender, pointed, straight or slightly curved, pinnate bristles about 

 4 times longer, and with short fine processes (fig. 13). Ventral 

 bristles (fig. 14) about' 25 in number, stout, slightly bent, tlie 

 simple smooth terminal portion nearly as long as the serrated 

 portion ; teeth of the terminal row very large and prominent, fol- 

 lowx'd by 5 — 8 rows of smaller ones diminishing in size toward 

 the base. 



Proboscis Cjual in lengtli to the eight anteriormost segments 

 taken together, })rovide(l with papillae on eacli li|). 



Habitat : — -logashiina near Misaki, 5 — 6 fatlioms (!) ; Choshi 

 in Prov. Shimosa (!) ; Ariaké Pay in Prov. Hyuga (Prof. K. 

 MiTSUKUKi) ; Azanuislii at tlie head of Aomori Gulf (!) ; and 

 Totomi Sea, 34 fathoms (" Albatross "). 



