14 AET. IL A. IZÜKA : 



1900. Lepidoiiofcus squamatus, Mulntosb. Brit. Ann. ii, p. 274. pi. xxv, 

 fio-. 1. 



The largest example of this species in my hand, the one collect- 

 ed by Prof. I. Ltima in Chepissani, Sakhalin, comprises 27 segments 

 and measures 28 mm. in length, while the breadth is 5.5 mm. 

 without, and 10 mm. with, the parapodia and setae. 



An example from Yodomi in Saga mi Bay, measures only 14 

 nnn. in length and o.O mm. in breadtli exclusive of parapodia and 

 bristles. 



Prostomium broadly ovate, bounded posteriorly by the fold of 

 nuchal plate, and anteriorly running into the bases of median 

 and lateral tentacles. It is smooth, iridescent, of a purplish pink 

 colour, with a, longitudinal median furrow, and bearing four black 

 eyes on dorso daterai margins. The first pair of eyes somewhat 

 in front of the middle of prostomium; the second, slightly smaller 

 pair nearer to the posterior border of same. Lateral tentacles 

 longer than caphalic lobe ; median tentacle considerably longer 

 than lateral ; all tentacles having a bulbous and deeply pigmented 

 region below pale terminal filament. The tentacular cirri are 

 similar in structure to, but more slender than, the tentacles. All 

 these organs, as also the subtentacles, are smooth. 



The cirriphore of tentacular cirri bears, on the inner edge, a 

 tuft of G or 7 slightly curved and tapering spinous bristle, which 

 are directed forwards. 



Elytra in 12 pairs, borne on the segments 2, 4, 5, 7 and so 

 forth on every alternate segment down to segment 23 inclusive. 

 They are ovate and reniform, studded with brownish chitinous 

 bosses (fig. 7) and densely ciliated on the outer and posterior 

 margin. The under surface is smooth and iridescent, and 

 shows a pear-shaped scar where it was detached from the 



