10 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
Family Ampharetidae— 
PAGE. 
Phyllocomus dibranchiata sp. nov. 
. 97 
Amythas membranifera gen. sp. nov. ... 
.102 
Family Capitellidse— 
Isomastus perarmatus Gravier ... 
' .105 
Family Maldankhe—- 
Rhodine intermedia Arwidsson 
.105 
Isocirrus yungi Gravier 
... 106 
Family Arenicolidae— 
Arenicola assimilis var. affinis Ashworth 
. 108 
Family Chlorine mi dae— 
Flabelligera mundata Gravier ... 
. 108 
Family Sabellidae— 
Potamilla antarctica Kinberg ... 
.109 
Family Serpulidae— 
Serpula vermicularis var. narconensis Baird 
. 112 
Spirorbis nordenskjoldi Elders ... 
. 113 
II.—POLYCMTA FROM COMMONWEALTH BAY. 
I have been supplied by Mr. J. G. Hunter, Biologist to the expedition, with the 
following information as to the collection of the worms 
“ During the greater part of the year 1912 dredgings were carried out in a small 
boat-harbour close to winter quarters. The depth varied from 2-5 fathoms ; the 
bottom for the most part muddy, and dredgings yielded a considerable number of 
Annulates, which form the chief constituent of the fauna of these shallow waters. 
“ Dredging in deeper water was prevented by the abnormal weather conditions 
that prevailed. In these latitudes the sea generally freezes over during the winter, 
and then by digging channels in the ice a dredge can be lowered. The violence of the 
winds at Adelie Land, however, prevented the sea from freezing, excepting at the 
beginning of September, 1912, when, during a calm lasting for several days, the sea 
froze sufficiently to allow of dredging operations. And so, on the 3rd and 4th of that 
month, rich hauls were made in depths from 15-30 fathoms. 
“ While the ‘ Aurora ’ was anchored in Commonwealth Bay, several dredgings 
were made with a small hand-dredge—(a) on 20th January, 1913, in 15-20 fathoms ; 
( b ) on 14th December of the same year, in 45-50 fathoms ; and (c) on 21st of the month, 
in 55-60 fathoms. 
