324 American Fisheries Society 



uniremis. These enter conspicuously into the food, not only 

 of young herring, but also of the winter flounder, Pseudopleuro- 

 nectes americantts. 



Just as Passamaquoddy Bay is a great resort for young her- 

 ring on the coast of the Bay of Fundy, so Miramichi Bay which 

 opens into the Gulf of St, Lawrence, is, as I learn from Dr. A. 

 G, Huntsman, equally attractive to the smelt {Osmerus mor- 

 dax). A plankton sample taken from the Miramichi River on 

 June 7, 191'8, under the direction of Dr. Huntsman, contained 

 very many young smelt swimming, with mouth wide agape, in 

 the midst of a copious copepod pabulum. The smelt larvae 

 varied in length from 6.5 to 11.5 millimetres, with an average 

 length of 8.15 mm. The average total length of the copepods 

 was 1.12 mm.; but as their oily nutriment is chiefly lodged in 

 the f orebody, we may neglect the attenuated abdomen and con- 

 sider their average effective length to be 0.75 mm. In point of 

 numbers, in a small fraction of the sample examined under 

 the binocular microscope in a watchglass, there are about 100 

 fish larvae to 3,000 copepods. By taking into account the 

 dimensions of the copepods and young fishes in the three 

 directions of length, breadth and height, we arrive at the 

 conclusion, drawn from enumeration and from measurement, 

 that one larval smelt is approximately the equivalent of thirty 

 copepods. Amongst the multitude of the more ordinary pelagic 

 copepods found in this region, the Miramichi plankton contains 

 a Calanoid form hitherto unrecorded from American waters 

 and perhaps representing an undescribed genus. 



The Shubenacadie River of Nova Scotia, opening into Cobe- 

 quid Bay, which in turn opens into the Basin of Minas at the 

 head of the Bay of Fundy, is known as a shad river and is now 

 under investigation by the Biological Board of Canada. The 

 shad (Alosa sapidissima) ascends this river to spawn. Its 

 stomach contents sometimes consist of copepod chyme, as 

 reported recently by Mr. A. H. Leim, of Toronto University, 

 Amongst the common species so far identified from the stom- 

 ach of a shad of intermediate size, taken in Scotts Bay, just 



