146 



AET. II. A. IZUKA 



A. Bristle from the 

 dorsal group of a 

 middle segment of 

 yotocirrus ?.onata. 

 322/1. 



B. Bristle from the 

 ventral group of 

 same. 332/1. 

 [After J. P. Moore.] 



Body nearly round and tapering toward 

 the anus, which is guarded by a pair of short 

 and broad lateral lobes representing a pair of 

 anal cirri. 



Parapodia rather small and slender, with 

 a prominent posterior ventral process, which is 

 somewhat longer than the rest of the parapo- 

 dium, and is directed caudad and laterad. 

 Dorsal papilla small but prominent. 



Bristles arranged in two groups, of which 

 the ventral contains 3, and the dorsal 2 ; 

 each bristle with delicate, tapering and winged 

 tip, and sigmoid with the end directed 

 dorsad ; bristles of the ventral group shorter 

 and only slightly bent ; those of the dorsal 

 group geniculate, strongly serrated at the 

 winged knee. 



The colour is very striking. The ground 

 colour, including that of parapodia, is a pale yel- 

 low ; the middle of each segment completely en- 

 circled by a rich orange -brown zone. 



Habitat : — Totomi Sea, 34 fathoms (" Alba- 

 tross "). 



Family Lycoridae. 



Body elongate, vermiform, subcylindrical or subdepressed ; 

 segments short, numerous. Prostomium distinct, with 2 tentacles, 

 2 palpi and 4 eyes. Peristomium (the first body-segment) without 

 parapodia, but with 4 tentacular cirri on each side. Parapodia 



