MOLLUSCA.— HEDLEY. 23 
A few fragments, September 3rd, 1912, and January 20th, 1913, from 15-25 fathoms, 
Commonwealth Bay. <A fragment, January 2nd, 1914, from 230 fathoms, ooze, in South 
Lat. 65° 48’ and Hast Long. 137° 32’. Numerous specimens, some alive, January 29th, 
1914, from 325 fathoms, ooze, off the Shackleton Ice-shelf. A few, January 28th, 1914, 
from 240 fathoms, ooze, off the Shackleton Ice-shelf, in South Lat. 65° 20’ and Hast 
Long. 95° 27’; and a few more, including the large example already mentioned, January 
31st, 1914, from 358 fathoms, in ooze, off the Shackleton Ice-shelf, South Lat. 64° 44’ 
and East Long. 97° 28’. A fragment, January 31st, 1914, from 110 fathoms, off the 
Shackleton Ice-shelf, in South Lat. 64° 32° and Hast Long. 97° 20’. A single valve 
was obtained by Mr. C. T. Harrisson in 270 fathoms, off the Glacier near the Western 
Base. 
CHLAMYS SUBANTARCTICA sp. nov. 
(Plate IT., figs. 14,15.) 
Shell large, solid, oval, moderately inflated. Auricles nearly equal. Colour pink, 
paler towards the margins. At an inch from the umbo there are 27 radial ribs passing 
from simple to compound, so that at the margin each rib is split into a bundle of three 
or four riblets, while one or two similar riblets occupy each intervening furrow. From 
less worn parts it appears that these furrows were closely latticed by concentric lamin. 
Height, 80; length, 75; depth of single valve, 15mm. 
This is very close to a recent Tasmanian species identified as C. antiaustralis Tate,* 
but is rather shorter in proportion to height and has the auricles more coarsely ribbed. 
The original of this description is a rather worn single valve with a large gap in 
the margin. It was dredged December 4th, 1913, in 14 fathoms, sandy bottom, Lusitania 
Bay, Macquarie Island. Perhaps the young of this is represented by a perfect specimen 
6mm. high, of a cadmium yellow colour, from an anchor recovered by the “ Rachel 
Cohen,” off the Nuggets, Macquarie Island, in 12 fathoms. 
Except C. colbecki, no species from so high a latitude reaches this size. 
LIMA CLOSEI %. sp. 
(Plate IT., fig. 16.) 
Shell small, slightly oblique, thin, rather broad and shallow. Colour white. 
Sculpture, about 40 narrow close-set radial ribs, more crowded at the side than in the 
centre, but absent from the auricles; these carry small sharp scales and are crossed 
by dense fine growth lines. Umbones prominent and central. Interior showing a 
faint imprint of the exterior ribs. Height, 10-5; length, 8-5; depth of single valve, 
2mm. 
* Hedley.—“ Endeavour ”’ Results, i. 1911. p. 96. 
