POLYCMTA--BENHAM. 
11 
“ During the summer cruise, Mr. J. G. Hunter, assisted by Mr. H. Hamilton, 
a number of dredgings were taken in deeper waters, the ‘ Aurora ’ being specially fitted 
for this purpose.” 
In addition, some tow-netting was done in the bay. 
The list of stations and the details of the hauls follow. A total of forty-seven 
species were obtained at these stations, the majority of which, as would be expected, 
are already known ; but I have found it necessary to establish two new species of 
Phyllodocids of the sub-genus Pterocirrus , namely, Eulalia (Pterocinus) hunteri and 
Eulalia (Pterocinus) mcleani : as well as a new species of Exogone , and of Scoloplos, 
and a new variety of Aricia marginata, in which the arrangement of the spines in 
the anterior segments presents a condition recalling that occurring in A . ohlini Elders. 
Further, a new species of the Ampharetid Phyllocomus , hitherto represented 
only by P. crocea Grube, exhibits a form of gill unique in the family. While a new 
genus in the same family seems needed for a species which possesses an entirely novel 
kind of tentacular apparatus in the form of a folded and introversible membrane in 
place of the usual filamentous tentacles. I have named this worm Amythas mem- 
brauifera. 
The collection is also of interest in that it contains as many as three specimens 
of the rare Nereis loxechini Kinberg, of which only three individuals have hitherto 
been recorded. 
Tomopteris carpenteri Quatrefages, so long unrecognised, is also represented, 
and is fully described ; and a northern species, T. sepientrionalis Quatrefages, is included 
in the collection. Certain other species hitherto found only outside the Antarctic 
region must now be included in that fauna, namely, Eulagisca conientis McIntosh, 
and Eunoa abyssomm McIntosh. 
In the total number of species submitted to me, and therefore presumably 
collected by the “ Aurora,” the present compares favourably with the number 
taken by previous expeditions, other than the “Gauss,” which was an extremely rich 
collection. 
One cannot help being struck with the enormous quantity of some of the species 
living at the sea-bottom in these cold seas. Thus in this collection I find in a single 
haul more than 100 individuals of Thelepus antarcticus; again, sixty-five individuals 
of Harmothoe spinosa were obtained at one haul; and of Potamilla antarctica as many 
as forty were brought up in the dredge at one spot. 
This abundance of individuals may be due in part to the scarcity of enemies 
and in part to the fact that the conditions, although so apparently severe, must in 
reality be very favourable for their existence. 
