EKliANTIATE POLYCHAETA OF JAPAN. 



21 



dorsal ptircii)odi(il liUiinontö, of wLicli tlio one at tli<j base of 

 cirrus as well as the most oxtoriial on the anterior and posterior 

 faces of parapodia, are usually Irifid. • 



Parapodia stout, with ventral ramus of a somewhat com- 

 pressed, obliquely truncated, conical form ; dorsal ramus represented 

 by a rather prominent short tubercle on the anterior dorsal face of 

 parapodium near the base. Dorsal cirri very long, their tip reach- 

 ing quite beyond the setae line ; of exactly the same shape and 

 colour as tentacular cirri, but with a prominent bilobcd glan- 

 dular swelling at base of each. 



Dorsal bristles very numerous, deli- 

 cate, capillary, with line but distinct proc- 

 esses of a- length o to 4 times the 

 diameter of the stem. Ventral bristles 

 slightly curved, with the tip smooth 

 and strongly hooked, bearded toward the 

 end. 



Elytra in 12 }>airs borne on segments 2, 

 4, 5, 7 and so forth, on every alternate seg- 

 ment to the 23rd inclusive. They are large, 

 generally beaii-shaped, strongly imbricate 

 and decussate. 



Cilia form a, strong marginal fringe on 

 more than ■[ the circumference.' of elytra, only 

 the covered anterior portion Ijcing free of 

 tlieiii. Papillae covei' the entire upper sur- 

 face of elytra. 



Habitat: — iSagami Bay, do fathoms 

 ("Albatross"); Totomi Sea, 41) fathoms 

 (" Albatross "). 



if 



A 



A. ^lidille vcnfrnl l)rislle (>t 

 roh/nn'c <:/iilo)üfnnnls. i'.W/l. 



B. Porlioii (ifiiflorrial Inisllc 

 of same. öHC/l. [After -I. P. 

 Slüorc]. 



