MARINE BIOLOGICAL STATION AT PORT ERIN. 115 
obtained from the examination of the past year’s plank- 
ton, at Port Erin, has been drawn up by Mr. Chadwick 
for this Report. Mr. Chadwick has also provided us with 
the two carefully drawn plates which illustrate this section 
of the Report, and represent some of the more interesting 
larval forms captured during the year. 
SuMMARY OF Port ERIN PLANKTON IN 1899. 
The following summary is the result of careful examina- 
tion of the series of tow-nettings taken in Port Erin Bay 
during the year 1899. It has not been possible to identify 
all the organisms taken, nor yet, in some few cases, to 
refer them to their respective classes, and this is especially 
the case with some of the Jarval forms. All the organisms 
taken during an hour’s tow-netting were examined alive, 
under a low power, immediately after capture, and the 
figures on Plates VI. and VII., with which these notes are 
illustrated, were drawn from living specimens under 
appropriate magnification. 
The occurrence of Pelagia perla, Gattiola finmarchica, 
Autolytus incertus, and the larve of Phoronis and Bala- 
noglossus in Port Erin Bay is here recorded for the first 
time. With reference to the Meduse, Mr. KE. T. Browne 
writes :—‘‘ The occurrence at Port Erin of Pelagia, Mitro- 
comella, Melicertidiwm, and Laodice tends to show that 
you have had a northerly current this summer, bringing 
down animals through the north channel from the Atlantic 
shores of Ireland and Scotland.”’ We hope to publish a 
more complete account of the times of occurrence and 
distribution of the Meduse at a future time. 
As an example of what may be looked for in a summer 
tow-netting across Port Erin Bay, the following list of 
organisins, taken on June 22nd, will be interesting. The 
