2g6 



A. IZUKA. 



B 



Text-figure i. The worms collected by 



Koebl in the Gulf of Miya 

 and identified with N. 

 divcrskolor by Marenzel- 

 ler,* are in all probability 

 of the same species as the 

 worm in question, since 

 this so closely resembles 

 N. divcrskolor that the 

 two might easily be corn- 

 founded, whereas indubit- 

 able N. divcrskolor has 

 never yet been met with 

 by me anywhere in Japan. 



N. japonka occurs very 

 abundantly in Kojima Gulf 

 (a part of the Inland sea 

 in Okayama Prefecture) 

 and in the rivers emptying 

 into it, and is locally 

 known under the name of 

 " Umi-biiru." The worm in the mature phase is collected in masses and 

 is very extensively used as manure. It occurs also in the Sumida River 

 and in the adjoining parts of the Gulf of Tokyo where it is known by the 

 local name of " Gokai " and is used as bait by anglers through almost all 

 seasons of the year. The species has also been collected by myself and 

 by others in a number of other localities, in Japan ; thus, in Toba in the 

 Province of Shima ; in the Gulf of Miya in Owari ; in Shimizu Harbour in 

 Suruga ; in Ito in Izu (collected by Mr. A. Fukuchi) ; in Kanazawa in 

 Musashi ; in Yokohama ; in Matsushima ; in Same Harbour on the cast 

 coast of Northern Japan ; Lake Bussct in Saghalin (collected by 



A. and B. — the arrangement ol paragnathi in the VII. 

 and VIII. division of proboscis; A, Nereis jnponiea. 

 B, N. divcrsieolor. io/l. 



C. and D. — Falcate bristles from the lower rami of para- 

 podium in the middle region of body ; C, from 

 Nereis japonka ; D, from A', diverskolor. 390/ r. 



Marenzeller Siidjapanischc Anneliden I. 187g. P. 14. 



