ERIIANTIAÏE rOLYClIAEÏA OF JAPAN. 139 



ways towards tlio ends of the body. Anteriorly the tip of 

 the hook shows about o short teeth, while posteriorly the bristles 

 becomes stouter and more prominently hooked, the hook being 7 

 or S toothed. 



Habitat: — Sendai T3ay, 14-18 fathoms ("Albatross"). 



(J onus Lunihr icon e reis Blainville. 



Prostomiiim exposed in the form of an obtuse lobe, without 

 tentacles or with rudimentary tubercle-like tentacles. Eyes two 

 or none. Mouth with 4 pairs of jaws, which are supported on a 

 double stalk. Parapodium small, imiramous, with simple bristles ; 

 cirri none. (lills absent. 



Liitiibricoiiefcis Japon ica Marenz. 



ri. XIV, figs. 17—18. 



1879. Luiiibricouercis j;i])oiiicii, Mareuzeller. Siidjap. Anuel., p. 29. 

 1885. „ „ Mcintosh. "Challenger" Aunel., p. 243. 



1903. „ „ Moore. Troc. Acad. Nat. Sc. Philad., Vol. 



LV, p. 454. 



l)ody slender, jiiUcriorly little tapering, and posteriorly 

 gradü;ill\' l;i|»('i'iii-- in (lie posterior two-thirds of the body; the 

 liiixl ciid wilh I wo lunger dorsal, and two shorter ventral styles. 

 'I'll'' Ixidy incasiiros nhouf. \',\{) mm. in length, and about G mm. 

 in lii'cjidlli at the widest region. 



Prostominni I »hi n fly conical, longer tlian broad; its length 

 ci|n;illiii-- Iho iohil Iciigtli. of the 2 non-i)arapodiated segments 

 and the (irst p;u';i j io(h'ated segment. At about the oôtli segment 



