EREANTIAÏE POLYCHAETA OF JAPAN. 133 



on the ventral side. The colour of tlie dental apparatus is deep 

 brownish black. 



This annelid is found usually burrowing in tertiary rocks, but 

 sometimes in sandy flats in the tubes of sabellid annelids. It is 

 largely used as bait, and is known under the name of " Iwa- 

 isomé " or " Iwamusi." 



Habitat : — Oslioro in Prov. Shiribeshi (!) ; Gulf of Aomori (!) ; 

 Matsushima Bay (!) ; Kamo Harbour in Prov. Uzen ; Komegawaki 

 in Prov. Echizen ; Gulf of Miyazu in Prov. Tango (!) ; Isohama in 

 Prov. Hitachi (!) ; Misaki (!) ; Yonoura in Prov. Suruga (!) ; Oma- 

 yezaki in Prov. Totomi ; Toba and Waku in Prov. Shima (!) ; 

 Sumoto in Prov. Awaji ; Yuki and Naruto in Prov. Awa (!) ; 

 Onomichi in Prov. Bingo (!) ; Sakurajima in Prov. Satsuma ; 

 Pescadores Islands, Formosa (Mr. T. Tad a). 



Genus Lysldice Savigny. 



Prostomium broader than long, with 3 small tentacles 

 approximated behind at base. Eyes 2, at base of lateral tentacles ; 

 no tentacular cirri. Mouth armed as in Eunice. Parapodium 

 uniramous. Anal segment with 1 very short anal cirri. Branchiae 

 al)sent. 



Lf/si(Ii('c coUnt'is Grube. 



n. \'[\", ligs. D — 10. 



1877. Lysiiliiu! colla ris, Ciiiibc. Aunulata Sciupcniiu;i, p. 166. 

 1871). ,, ,, Mixrouzelior. .Sikljap. Aimel., p. 28. 



Tlic nniiic '• colbiris " oliviously rcfei's to the wliite ring to be 

 seen in li\inL' numuils near the aiifei'ior end. The ground colour 



