52 American Fisheries Society 



the body cavity of this species in each of these months. 



Tomcod (Micro gadus tomcod) were examined in every 

 month of the year. Adult ascarids were found in each 

 month except July and August, and immature ascarids 

 in each month except June and September. It should be 

 stated that very few tomcod were examined in the months 

 of June, July and September. 



Pollock (Pollachius virens) were examined in the 

 months of April, May, June, July, September, October 

 and November. Both young and adult ascarids were 

 found in each of these months. 



The Hakes (Phycis tenuis and Urophycis chuss) were 

 examined in the months of May, June, August, Septem- 

 ber, October and November, and immature ascarids 

 found in each species in each of the months. 



Goose-fish (Lophius piscatorius) examined in the 

 months of April, May, June, July, August, September, 

 October, November and December yielded immature as- 

 carids in each of these months and adults in all except 

 the months of April and June. 



Toad-fish (Opsanus tau) examined in May, August, 

 September, October and November yielded both adult and 

 immature ascarids in each month. 



ACANTHOCEPHALA. 



Similar distribution throughout the year for the Acan- 

 thocephala seems to be shown as for the Nematoda. For 

 example, the species Echinorhynchus acus was found in 

 the Winter Flounder (Pseudopleuronectes americanus) 

 in every month in which examinations were made, viz., 

 January, February, April, May, July, August, September, 

 October, November and December. 



TREMATODA. 

 / 



My record of Trematodes is not so full as that of the 

 other orders of helminths. So far as it reveals anything, 

 however, it gives no indication of seasonal variation. A 



