PELAGIC LIFE, FALMOUTH. 305 



north-west, I have frequently seen Grerrans hay swarming with 

 specimens of Aurelia aurita. On these occasions one may hunt 

 in vain in Falmouth harbour for specimens of this species. 



Up to the spring of the current year my only craft for 

 collecting purposes was a small open eleven-foot sail and rowing 

 boat, in which it was not prudent to venture more than a few 

 miles from shore. On discussing this matter with my friend, 

 Mr. A. Ingram, last winter, he strongly advised me to obtain a 

 double centre-board canoe, and on his return to London kindly 

 sent me designs and full instructions for building a canoe 

 according to his ideas. During the early part of the present 

 summer the boat was launched. I think it would be difficult to 

 find her equal, not only for sea-going qualities, but also for 

 sailing capabilities ; and I gladly take the present opportunity 

 of thanking him for the trouble he has taken. 



I also have to thank my friends Mr. J. T. Cunningham and 

 Mr. Walter Oarstang, both on the staff of the Marine Biological 

 Association of the United Kingdom, for their valuable assistance 

 to me on occasions too numerous to mention. 



As I have already published a list of the various species of 

 copepods and other forms usually to be found in the sea near 

 Falmouth, I propose in my present communication to make some 

 extracts from my note-book ; recording the variations in the 

 temperatures of the sea, and forms of interest captured from time 

 to time in my tow-net. 



August, 1891. During this month the surface temperature 

 of the sea was very low, and ranged from 58'^F on the first of 

 the month to 57 6° F on the 29th. 



On the first of the month after a considerable interval, a few 

 specimens of Corycoeus anglieus occurred in the surface-net 

 gathering made on that day. Actinotrocha, the beautiful larva 

 of Phoronis, was fairly abundant in surface-gatherings through- 

 out the month. Noctiluca miliaris had been fairly abundant in 

 the sea since the beginning of the year up to the present time. 

 On the 6th of the month northerly winds set in, which swept 

 these surface forms out to sea, and by the 17th, this species 

 vanished from the neighbourhood for a considerable time. On 



