ERRANTIATE TOLYCHAETA OF JArAN. 15 



elytropliore. All the elytra overlap considerably, entirely covering 

 tlie dorsum. 



Dorsal bristles long, tapering, and finely serrated (fig. 8) ; they 

 are generally covered with hne mud and parasitic growths. 



Ventral bristles (fig. 9) in general of a golden hue, stout, with 

 a short series of spikes on the distal, slightly thickened part of 

 the shaft below apex. 



Nephridial ]iapil]ae commence to occur from the Sth ]3arapo- 

 dium. 



Habitat: — Lake Bousset and Chepissani in Sakhalin, 7 — 8 

 fathoms (Prof. 1. Ltoia) ; Azamuslii, in tlie head of Aomori Gulf (!) ; 

 Gulf of Agu in Prov. Shima, — 10 fathoms (!) ; »Sunosaki in Bo- 

 shiu (!) ; Matsuwa near Misaki (!) ; Yodomi in Sagami Bay, 40 

 fathoms. 



Polynoë elcwa (Montag.). 

 PI. TIT, figs. 10—11. 



1808. Aplirodita clav/i, Montag. Trans. Tjiun. Soc., is, p. 108, pl. vii, 



f. 3. 

 1824. Jjepldonohis clavatns, Leach. Snpp. Ency. Brit., i, p. 452. 

 182B. Polynoë scntellata, Jlisso. Hist. nat. Enrop. mérid., iv, p. 414. 

 1829. Emno]po squamata, T). Cliiaje. INIem. snlla Storia, iv, p. 155, 



tab. Ivii, f. 8, 17. 

 18:30. Halithaea clavn, Templeton. Loud. Mag. Nat. Hist., ix, p. 234. 



1800. Polynoë clypeata, Grube. Arch. f. Naturges., Bd. xxvi, p. 71, 

 taf. iii, f. 1. 



1801. Polynoë clypoata, Grube. Ausiiug n. Trieste, p. 138, taf. iii, f. 1. 

 1805. I.opidonotus clava, Jolmstou. (lat. Brit. Mus., p. Ill, pl. iv, f. 



5, 0. 

 „ Polynoë modesta, De Quatrefages. Hist. Nat. Annel,, i, p. 243, 

 1S0)7. Lepidonotns clava, jNlalmgren. Ann. Polych., p. 130, 



