SEA-FISHERIES LABORATORY. 435 



have been temporarily distinguished by the letter M 

 and a distinctive numeral in my note-books, and a 

 description or identification of them will appear in due 

 course. 



During April, some Euphausid larvae (probably of 

 Thysanoessa sp., and perhaps of Meganyctiphanes sp.) 

 are exceedingly abundant, both in " Calyopsis " and 

 early " Furcilia " stages in many of the plankton hauls 

 at Port Erin. 



