MARINE BIOLOGICAL STATION AT PORT ERIN. 189 



Mr. Arnold Watson, of Sheffield, sends me the follow- 

 ing report upon his work : — 



" My object in going to the Port Erin Biological Station 

 in April last was chiefly to obtain fresh material for 

 studying the spinning gland of Panthalis oerstecli, and 

 so far as the dredging operations were concerned, the 

 object was attained, since we captured the only complete 

 specimen we have ever got, our previous captures being 

 (with the exception of a very young one, which lived in 

 my tank a year) fragments, chiefly the anterior portions, 

 though once a posterior part was taken. The complete 

 specimen above-mentioned was 3 \ inches long when at 

 rest. When moving it would be rather longer. I was 

 unable to get it to settle in my tank, though I provided 

 it with mud, &c, and at the end of ten days I killed it, as 

 it was evidently ailing. This specimen was lent to Prof. 

 M'Intosh, who desired to make a drawing from it for his 

 forthcoming Monograph on British Annelids, and he 

 has since returned it. 



" We also got an anterior portion of another Panthalis, 

 which lived in my tank until the end of June. It had 

 commenced renewing its hinder quarters, in fact had 

 grown two small anal cirri, when I found it necessary to 

 kill and preserve it. We got a considerable number of 

 mud tubes belonging to Panthalis, nearly all of which 

 were empty. 



"I am sorry to say that ill-health has prevented my 

 making use of the material in the way I intended, and so 

 far I have no further progress to report, though I hope in 

 the near future to again take up the study of the spinning 

 gland, and give a further description of PantJialis and its 

 mode of working. 



" I think there are only the following two additions to 

 make to your list of species, They are worms which were 



