FLABELLIGERIDAE i6i 



Flabelligera pennigera, Ehlers. 



Ehlers, 1908, p. 123, pi. xvi, figs. 9-10. 



St. 141. 29. xii. 26. East Cumberland Bay, South Georgia. 200 yards from shore, under Mount 

 Duse. 17-27 m. Gear BTS. Bottom: mud. Two specimens. 



St. 144. 5. i. 27. Off mouth of Stromness Harbour, South Georgia. From 54° 04' S, 36° 27' W 

 to 53° 58' S, 36° 26' W. 155-178 m. GearN4-T. Bottom: green mud and sand. One specimen. 



St. 145. 7. i. 27. Stromness Harbour, South Georgia. Between Grass Island and Tonsberg 

 Point. 26-35 m. Gear BTS. Four specimens. 



Remarks. The specimens are in very bad condition, and I cannot count the number 

 of chaetigers. The mucous sheath is very thin. There is normally a single hook only 

 in the neuropodia. The dorsal bristles are completely hidden by thick clusters of 

 papillae, which impart to the notopodia the appearance of gills exactly as described by 

 Ehlers. 



Flabelligera mundata, Gravier. 



Gravier, 1907, p. 37, pi. iv, figs. 31 and 32. 

 Benham, 1921, p. 108, with synonymy. 



St. 190. 24. ill. 27. Bismarck Strait, Palmer Archipelago. 64° 56' 00" S, 65° 35' 00" W. 93- 

 126 m. Gear DLH. Bottom: stones, mud and rock. One specimen. 



Remarks. A single specimen in good condition measuring 38 mm. by 7 mm. in- 

 cluding the sheath, for 27 chaetigers. The branchiae are numerous, the mucous sheath 

 is very thick, and there are for the most part three composite hooks to each neuro- 

 podium. The papillae attached to the bristles are as figured by Gravier. 



Genus Brada, Stimpson 

 Brada villosa (Rathke). 



Fauvel, 1927, p. 121, fig. 43 e-l. 



St. 167. 20. ii. 27. Off Signy Island, South Orkneys. 60° 50' 30" S, 46° 15' 00" W. 244-344 m. 

 Gear N 4-T. Bottom: green mud. One specimen. 



St. 175. 2. iii. 27. Bransfield Strait, South Shetlands. 63° 17' 20" S, 59° 48' 15" W. 200 m. 

 Gear DLH. Bottom: mud, stones and gravel. One specimen. 



Remarks. There is a very thick coating of sand which hides the skin, and I cannot 

 see the usual circlet of papillae around the parapodia. Nevertheless, I believe that this 

 form belongs to the common northern species. The southern B. mammillata appears 

 to lack the delicate flagelliform tips to the ventral bristles. I have examined Mcintosh's 

 Challenger specimens of the latter species and I can see no trace of these tips. Their 

 absence may be due to wear, but from the appearance of the bristles I do not think 

 that this is so. 



