6 EDGAR A. SMITH. 



Only three dead and worn valves and one young fresh specimen were obtained. L. 

 Iseviuscula, Pelseneer, is also very like the present form. 



LIMA (LIMATULA) HODGSONJ. 

 (PL III., 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 striae ; 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 ; diani., 20. 



Winter Quarters, various dates, 10-130 fathoms, also off Coulman Island, 100 

 fathoms. 



Allied to Lima pygmsea 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. 

 (PI. III., figs. 9-9a.) 

 Pecten colbecki, Smith, Report ' Southern Cross ' Mollusca (1902), p. 212, pi. xiv., 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 costse, and very delicate 

 concentric raised striae. 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 costse 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. 



