EEEANTIATE TOLYCHAETA OF JAPAN. 



189^ 



each of them enters a diverticulum of the ahmentaiy canal of 

 the mother-animal. The buds, on attainiffg certain size, again 

 give off buds, so that tlie whole attains a remarkably complicated 

 condition. In the buds, the posterior region is early formed, and 

 soon becomes furnished with two long anal cirri. 



Reproduction is effected by branching as just described and 

 also by the formation of sexual buds, each of which is provided 

 with two e^^es, but lacks tentacles and tentacular cirri. 



It is a very difficult matter to procure the cephalic region 

 of the annelid ; indeed this has never before been got in Japan. 



After laborious examinations 

 of several specimens I was 

 fortunate enough to observe 

 the cephalic region of the 

 species, in the last winter, 

 during a sliort stay in the 

 Misaki IMarine Station. 



Prostomium somewhat el- 

 liptical in outline and a little 

 longer than J the breadth, 

 with a i)air of large, some- 

 what conical palpi of about 

 the length of tlie prostomium 

 itself. Anterior pair of eyes 

 nuich larger tlian tlie pos- 

 terior, more apart from each 



A. Dorsal aspect of the cophali.- ro-i.ni cf Syllis otllOr tlulU thoSC of the latter. 

 rmnosa. !M)/1. 



B. Vi-ntmi aspoct of same. :$o, I. Median tcntacle arising from 

 about tlio middle of the dorsal surface of prostomium, extending 

 a little beyond the anterior border of palpi. Lateral tentacles 



