NOTES OK" THE FATJNA OF FALMOUTH. 201 



M. Paul Grourret'^' notes the occurrence of the same species 

 in the sea in the neighbourhood of Marseilles under the synomym 

 of Ceratium pellucidum. The genus Ceratium is of great interest 

 to the naturahst as it is highly phosphorescent. 



The planulse of Chrysaora were common in the surface- 

 nettings during this time, as were also young specimens of sea- 

 urchins with parts of the pluteus larva still attached. 



August. Taken as a whole, this month was fine but not 

 warm, and with the exception of a few close days at the end of 

 the month the average surface temperature of the sea was low for 

 the time of year. The following is a list of the principal changes 

 of the surface temperature during this month. On the 1st the 

 surface temperature was 60'9°r. ; 2nd, 6r9°F. ; and by the 5th 

 it had fallen to 60'3°F. A slight rise then followed, and by the 

 10th 6lT. was reached, but by the 11th it receded to 60°F., and 

 by the following day to 59-6°r. After slight fluctuations the sur- 

 face temperature rose to 63T. on the 19th, and between the 20th 

 and the 27th it remained fairly uniform at 64°F. ; the atmosphere 

 being at that time close and warm. The remaining four days of 

 the month were a little cooler, the surface temperature falling 

 2°F. 



The contents of the several gatherings made with the tow- 

 net during this month were very similar to the last. Noctiluca, 

 larvse of ^girus punctilucens, and Beroe continued to be present 

 in varying numbers during this time. The presence of several 

 specimens of Corycseus anglicus on the 11th is noteworthy. One 

 of these was coated with diatoms, and one female was carrvino- 

 ova. In the same gathering one Pilidium larva was noticed. 



September. The surface temperature of the sea on the 1st 

 was 61-9°F. Ou the 3rd it had risen to 62°F., and by the 5th it 

 had increased in temperature to 63-3''F. 



On the 10th, when the last tow-netting was made for this 

 year, the surface temperature had risen to 65 °F., and the contents 

 of the tow-net were very rich and varied. This was the beginnino- 

 of the usual autumnal invasion of channel and oceanic forms 

 which invariably heralds the approach of that season. Unfortu- 

 nately my observations had to be discontinued for a time • but 

 judging from the list of species recorded in that gathering, there 



