18 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
appear to be confined to the Antarctic region, namely, Terebella elder si, T. vayssieri, 
and Lean a arenilega. The others enter the sub-antarctic region at Kerguelen and 
Tierra del Fuego, &c., while the seventh Scione mirabilis (which, as I show, includes 
S. spinifera Elders) travels up both coasts of South America into the southern tem¬ 
perate zone. 
Family AMPHAKETIDiE. 
Six species of this family have been gathered by previous expeditions within 
this area ; the present report contains an account of only two species, both of them 
new, as I have mentioned earlier in the memoir. These are Phyllocomus dibranchiata 
and Amythas (gen. nov.) membranifera. 
Family CAPITELLIDTE. 
Tt. has been stated that this family does not enter the Antarctic region, but 
Gravier has recorded one species, Isomastus perarmatus from the Weddell Quadrant, 
and this has also been obtained by the “ Aurora.” 
Family MALDANIDTE. 
The Swedish expedition has added materially to our knowledge of the family, 
as it exists in this region so that seven well characterised species and some varieties are 
known, as well as three unspecified forms recorded by Ehlers. The “Aurora” 
gathered two of the species, both of which are confined to this region, namely, Rhodine , 
intermedia (hitherto confused with the northern R. loveni) and Isocirrus yungi, originally 
discovered at Petermann Island. 
Family CHLOR HAEMIDiE. 
Of the six species of Flabelligera reported from the Antarctic only one is included 
in this collection (F. mundata ), which is wide-spread round the southern land-mass. 
The only other member of the family that has been mentioned is Trophonia kerguelarum 
Grube, as having been obtained by the “ Discovery” at winter quarters, but no 
reference to this locality is made in Ehlers in his later works, though it is sub-antarctic 
in its distribution. 
Family SABELLIDiE. 
Nine species have been recorded from this region, of which tour are quite small 
and have been obtained only by the “ Gauss.” The only species collected by the 
“ Aurora ” is Potamilla antarctica, which occurs in considerable numbers, and some¬ 
times attains a large size. It also enters the Sub-antarctic region. 
Family SERPULIIAE. 
Two of the ten species known to occur in the Antarctic are contained in this 
collection—the widely distributed Serpula vermicularis and Spirorbis nordenskjoldi. 
