70 AßT. IT. — A. IZUKA : 



the tip of the Icitcral tentacles, arising from about the middle part 

 of the dorsal surface of prostomium. 



Tentacular cirri nearly IJ times as long as the median ten- 

 tacle, and both the dorsal and the ventval cirri are about the same 

 in length. The peduncle of tentacular cirri bears some number of 

 fine capillary bristles. 



Parapodium (fig. 2) somewhat conical, flattened antero-posterior- 

 ly, as broad a.s long ; dorsal ramus shorter than the ventral. 

 Doi'sal cirrus, with broad base and finely pointed tip, arising from 

 about the middle of the dorsal border of parapodium and extend- 

 ing a. little beyond the tip of dorsal ramus, but not reaching to 

 the tip of ventral ramus. Ventral cirrus short, about half as long 

 as the dorsal. Aciculae 2, the ventral one pointing laterally to- 

 wards the middle of ventral ramus, and the dorsal pointing towards 

 the inferior border of dorsal ramus. 



Setae of the ventral series are of the serrulate kind (fig. 3), 

 about 12 in number ; the middle series consisting of about 8 

 spine-like setae (fig. 4), eacli having a whip-like terminal process 

 of hairy nature ; and the dorsal series consists of G or 7 penicil- 

 late setae (fig. 5). Hair-like setae (fig. (>), 1 or 2 in number, occur 

 on the inferior border of dorsal ramus, only o]:)serva])le by minute 

 examination. The tomentose bristles or the silken threads, which 

 occur commonly in the parapodia of this group of annelids are 

 not found in this species. 



Elytra in 43 pairs, borne on segments 2, 4, 5, 7, and so on, 

 on every alternate one down to tlie penultimate (85th) segment ; and 

 among tliem the anteriorly placed elytra Ijeing reversely imbricat- 

 ed. Elytra campanulate, and smooth. The posteriormost pair of 

 which is considerably small as compaired with the rest of them 

 dig. 1). 



