554 ADDENDA 



whether the American form is actually identical with the European, a question 

 on which we hare nothing to contribute. 



Rock eel {Pholis gannellus Linnsus), p. 359 



The following observations, communicated by W. C. Schroeder, prove that 

 the rock eel descends deeper in the Gulf of Maine than we had supposed (p. 361) : 

 Twelve miles southeast of Round Shoal buoy, Nantucket Shoals; several specimens 

 found in the stomachs of cod in 15 fathoms; also one, eaten ahve, from the mouth 

 of a pollock caught at 34 fathoms on Platts Bank, July 28, 1924. 



American pollock {PollacJiius virens Linmeus) , p. 396 



The following measurements by W. C. Schroeder show that under favorable 

 conditions pollock may be considerably heavier at corresponding lengths than those 

 listed on page 397 : 



Fish caught on Rose and Crown Shoals off Nantucket, August 16, 1923. 



Length, inches Weight, pounds 



29H 11^ 



351: 21 



4114 35J^ 



Capture by the FisTi Eatvk of considerable numbers of larval pollock in the 

 tow net during December and January, 1924-25, off the western and southern 

 sides of Stellwagen Bank proves that this important spawning ground is a favor- 

 able nursery for the young fish (p. 405) . 



