No. 541] THE CANADIAN OYSTER 



35 



coloration as in their native home. For comparison 

 with my former papers I will give the measurements of 

 a single specimen with the characteristic postero-dorsal 

 high umbos, the large convex left valve, and the smaller 

 and flatter right valve, velum, foot, pigment spot and the 

 rest. Ocular V, objective 4, 42 long by 37 high 

 (=.289 X .255 mm.). This proves that larvae grow up. 

 There is only one other bit of evidence possible and that 

 is to find spat. This I have not done as yet. It is too 

 early for this year's spat and I have not seen any un- 

 doubted specimens of a former year's spat. One can 

 judge that the comparatively few descendants of two 

 and a half barrels deposited at Hammond Bay, five 

 barrels at Nanoose Bay, and one barrel at Oyster 

 Harbor, when dispersed over the broad areas at their 

 command, would not prove very conspicuous objects, 

 which is again complicated by the presence of millions of 

 British Columbian oysters of varying sizes, shapes, and 

 complexions. 



I regard my findings as conclusive and would urge the 

 transplanting of Atlantic oysters (Ostrea rirfjiitint 

 Gmel.) to the Pacific in greater quantities. The At- 

 lantic clam (Mya arenaria L.) has propagated enor- 

 mously here notwithstanding the fact that it has more 

 competitors in its particular habit than in its original 



Ostrea lurida Carp.— Even before making any head- 

 way in the foregoing researches, I had begun to gather 

 information on the occurrence, size, shape, color, struc- 

 ture, breeding, etc., of the British Columbia oyster. 



Hammond Bay, but a few specimens may be found under 



front of the C. P. R. cable house in the former, and just 

 inside the far point of the latter, and are usually so 

 broadly and solidly attached (with the left valve against 

 the under side of the stone and hence uppermost) that it 

 is scarcely possible to separate them without destroying 



