POLYCH^TA BENHAM. 31 



the back of the prostomium. I have failed to find anything like this linear longitudinal 

 ridge in any Syllids figured by Ehlers, Gravier, or other authors. 



On the ventral surface, the prostomium is notched on its hinder margin and the 

 borders are deeply pigmented. The anterior segments of the body are provided with 

 large ventral glandular pads as in the atokous phase ; and in the pale-coloured reddish 

 individuals, these are very conspicuous owing to their opaque whiteness. 



Locality of Atokous forms. 



Boat Harbour, surface 3 fathoms (three specimens); and Commonwealth 

 Bay, 25 fathoms (four). 



Locality of Epitokous phases. 



Boat Harbour " taken in hand-net at the surface," on 8, VII, 12 ; 7, IX. 

 12 and 14, IX, 12. 



Distribution. Port Charcot (Gravier). 



Family APHRODITID^E. 



Sub-family APHRODITIN^;. 



Genus I^ETMONICE Kinberg. 



L^ETMONICE PRODUCTA Grube. 



Grube (1877), p. 512. 



Mclntosh (1885), p. 39, pi. VI, figs. 1, 2; pi. IV A, figs. 1-8. 



Ehlers (1908), p. 40. 



Ehlers (1913), p. 438. 



Gravier (1911), p. 80. 



Moore (1903), p. 420; and various other authors. 



Seventeen individuals of this handsome annelid were obtained. It has been 

 so fully described by Mclntosh that nothing more need be said of it here. 



Localities. 



Station 3, 157 fathoms (one). 



Station 11, 358 fathoms (one). 



And fifteen specimens without any data. 



Distribution. Kerguelen (Grube, Mclntosh), Heard Island (Mclntosh), Kaiser 

 Wilhelm II Land (Ehlers), Graham's Land (Gravier), Japan (Moore). 



L. PRODUCTA var. BENTHALIANA Mclntosh. 



Mclntosh (1885), p. 45, pi. VIII, figs. 4, 5 ; pi. IV A, fig. 12 ; pi. V A, figs. 1, 2. 

 Moore (1903), p. 420. 



A single individual was obtained by Professor Flynn off Maria Island at a 

 depth of 1,300 fathoms. 



