EREANTIATE POLYCHAETA OF JAPAN. 



31 



a small slender process. Dorsal cirri with small ceratopbore and 

 long slender style which anteriorly reaches considerably beyond, 

 but posteriorly fall short of, tip of bristles. A^entral cirri short, 

 less than | the dorsal in length. 



Elytra in 25 pairs ; borne on segments 2, 4, 



5, 7, 21, 23, 26, 29, 32, 34 and after 



that on every third segment to segment 61 ; 

 small, leaving a large part of dorsum exposed, 

 with central attachment, quite smooth ; mesial 

 half reddish brown, lateral half unpigmented. 



Without dorsal bristles. Ventral bristles of 

 the dorsalmost row or two with shaft scarcely 

 half as thick as other ventral bristles, their 

 ends much prolonged and provided with trans- 

 verse rows of fine hairs quite to the simple tip. 

 Other ventral bristles of usual form ; distal ones 

 with simple tip and as many as 14 combs ; 

 middle and ventral ones with a more or less 

 prominent accessory tooth at tip ; ventralmost 

 ones with shorter enlarged ends, with as few as 8 



Middle ventral bristle COlubs . 



Habitat: — Sagami Bay, 153 fathoms ('• x\l- 



cif 7'. fiemierma. 332/1 

 [After J. V. Moore]. 



batross "). 



Polynoc inferosefosa n. sp. 



?1. \\\ ligs. 6 — 10. 



This is a long, slender species. The single specimen on hand 

 measures as follows : total length 41 mm.; maximum breath of body, 

 as measured on the ventral si(le of tlie 15th segment, 3 mm.; 



