6 EDGAR A. SMITH. 
Only three dead and worn valves and one young fresh specimen were obtained. L. 
leeviuscula, Pelseneer, is also very like the present form. 
Lima (LIMATULA) HODGSONI. 
(Pl. IIL, figs. 8-8b.) 
Shell oblong, oblique, narrow above, rather convex, thin, white; anterior side 
more curved than the posterior ; ventral margin arcuate, curving obliquely upwards 
behind ; surface ornamented with 30-35 fine ribs, which are very finely scaled by being 
crossed by the lines of growth (fig. 8b); the ribs are rather broader than the inter- 
vening grooves, and do not occur on the auricles, which are only sculptured with 
the incremental striz ; the scales are very close-set, and only very little elevated ; 
interior of the valves radiately sulcate, slightly denticulate along the lower margin ; 
umbones central, a little prominent above the ligamental area, which is very narrow 
diamond-shaped. 
Length, 27°5 millim. ; height, 35 ; diam., 20. 
Winter Quarters, various dates, 10-130 fathoms, also off Coulman Island, 100 
fathoms. 
Allied to Lima pygmea Philippi, but much larger, of a rather different form, 
being broader beneath and much more contracted above. The ribs, also, in the present 
species are broader and much more beautifully squamate. 
PECTEN COLBECKI. 
(Pl. IIL, figs. 9-9a.) 
Pecten colbecki, Smith, Report ‘Southern Cross’ Mollusca (1902), p. 212, pl. xxv., fig. 11. 
Winter Quarters, 20-130 fathoms. 
Only three small left valves and one right valve were collected. The former are 
interesting, as hitherto only the right valve was known. They are all of the same rich 
purplish red or plum colour as the type, with the ears and umbones whitish. The 
right is rather flatter than the left valve, and its posterior auricle is a trifle larger than 
the anterior, but not very deeply sinuated below. Its sculpture is similar to that of 
the other valves, consisting of about fifteen rounded, but feeble coste, and very delicate 
concentric raised striz. Some of the riblets are broader than others. Owing to the 
thinness of the shell, the inner surface of both valves in these young specimens is 
radiately grooved and ridged like the exterior, whereas in the adult, this feature is less 
observable towards the outer margin, since the costae become less and less pronounced 
as the shell increases in size. In the left, and slightly more convex valve, the auricles 
are almost alike, the anterior being perhaps a trifle the larger. 
