MARINE BIOLOGICAL STATION AT PORT ERIN. By 
to be. Apart from these, no case of hermaphroditism 
amongst hydroids is known, with the exception of a few 
isolated instances mentioned as monstrosities by persons 
who have had to examine very large numbers of some one 
species. | 
“ TTaliclystus was again found both on the breakwater 
and at Fleshwick Bay. Port Erin Bay was frequently visited 
this summer by large shoals of Medusxe— Aurelia, Cyanea, 
Melicertidium, Turris, Tiara, and Margelis all being very 
abundant on several occasions. 
“The tow-nettings proved to be quite as good as last 
year. ‘Tornaria was fairly common again, and the shear- 
net discovered numerous specimens of the later stages for 
us. Pilidium and Actinotrocha, especially the former, 
were unusually abundant during the last fortnight of 
July. A new Ophiopluteus was taken several times early 
in August, but I have been unable to find any description 
of it as yet; its most striking peculiarity is the special 
development of the ciliated bands at the bases of the 
arms to form conspicuous ridges, recalling the ‘ epau- 
lettes’ of an Hchinopluteus. ‘ Ophioplutcws maneus,’ 
usually the commonest Ophiopluteus at Port Erin at this 
time of year, was extremely rare, but the larve of 
Ophoglypha albida were much more abundant than last 
year, and those of Ophiothria fragilis were also very 
common. 
“A specimen of Hledone, which had died in the 
Port Hrin Aquarium, recently sent to Manchester, was 
found to have its suckers arranged in a double row on 
each arm. Dr. Hoyle called my attention to this striking 
resemblance between this specimen and the genus 
Octopus. In other respects, however, it resembled 
Kledone, and an examination of the radula has proved it 
to be undoubtedly a specimen of this genus, I expect 
