148 



DISCOVERY REPORTS 



Nerine sp. 



Genus Nerine, Johnston (sensu Mesnil) 



St. 181. 12. iii. 27. Schollaert Channel, Palmer Archipelago. 64° 20' 00" S, 63° 01' 00" W. 

 160-335 m. Gear OTL. Bottom: mud. Two specimens. 



•2mTnT 



O-L 



a b 



Fig. 56. Nerine, sp. 

 a. Anterior foot. b. Bidentate hook. 



Description. Two rather ill-preserved anterior fragments, the largest of which has 

 24 chaetigers and measures 15 mm. by 3 mm. The body is stout and massive and the 

 gills give it a foliaceous appearance. 



The prostomium is an elongated plate rounded in front and ending behind in a small 

 knob, which I take to represent an occipital tentacle. The palps are lost, and there are 

 no eyes. The hinder end of the prostomium reaches to the middle of the ist chaetiger. 

 The I St chaetiger has an oval dorsal lamella, a rounded ventral lamella and capillary 

 bristles in both rami. The gills begin on the 2nd chaetiger and are continued to the 

 ends of the fragments. They are large and fused with an upward extension of the dorsal 

 lamella (Fig. 56, a). The ventral lamella is vertically elongated and with a rounded edge. 

 Both dorsal and ventral bristles are capillary until the 21st chaetiger, where, in addition 

 to the capillary bristles, a row of 15 bidentate hooded hooks (Fig. 56, b) appears in the 

 ventral ramus. 



Remarks. These fragments probably belong to Nerine, but the few anterior segments 

 of which they consist do not show any hooks in the dorsal rami. The closely allied 

 Neri Hides has no capillary bristles in the dorsal ramus of the ist chaetiger, as well as no 

 hooks in the dorsal ramus. I know no Nerine in which the ventral hooks appear as 

 early as the 21st chaetiger, and I have found no previous record of a Nerine from 

 Antarctic waters. 



