ERPtANTIATE rOLYOITAETA OP JArAN. 121 



Posterior liooks (fig. 0) 2 or 3 in number, 3-toothed, and pro- 

 vided witli guard. 



Brancliiae confined to the anterior parts of body, being 

 present on oth-oOth segments, mucli longer than dorsal cirrus, 

 with long and slender filaments up to 12 in number. 



2\nal seginent with 2 long slender dorsal and 2 short ventral 

 anal cirri. 



<Jreat dental plates with teeth on the left, and 10 on the 

 right ; tlie left un])a,ired plate with 7 teeth ; the paired lateral 

 plates with teeth on the left, and 10 on the right. 



Mandibles much tapering posteriorly (fig. 7) ; their cutting 

 edge broad. 



Habitat : — Tatokujima in Trov. Shima (!), Suruga Bay, G7- 

 75 fathoms (" Albatross "). 



J^tinice flni'opicfa n. sp. 

 PI. XIV, figs. 1—5. 



Body, consisting of 100 segments, measures 215 mm. in 

 Iciigtli and mm. in breadth excluding parapodia, and 10 mm. 

 including tlicm, at the 10th segment wdiere it is broadest. 

 Breadlli in flic middle of Itody, 5.5 mm. including parapodia. 

 It sligliiiy tapci's antcrioily (o Ihc 2nd segment, and very 

 grai Inally Idwaid | H)sf ci'ioi' end. Dorsum highly arched and 

 \-ciilral snrl'acc ;ilniMsl Hal, in llic greater ])ai't of the l)ody. 



Tlie cojonr in tlic li\ing animal, hotli dorsally and ventrally, 

 is a deep |inrjil(' wifli liglil ine(;dlie iridescence, except the dorsal 

 sui'face of (ill' 'it 11 (tir Ilic Uli )iara|)odiate(l segment) and the 3 

 transversely .ni-anged ronndisli spots on tlie dorsal surface of 

 scLnnents. all wliieli ii;iils are of a liriiiht \'ellow colour. Some- 



