302 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Both these forms, or very closely related organisms, 

 are figured by Lohmann in his " Eier und Cysten des 

 Nordischen Planktons,"* and he is of opinion that the 

 two are closely related and that Bergh's view that they 

 are Molluscan egg-capsules is correct. Two or three other 

 observers have expressed similar opinions since. 



We are certainly inclined to regard both of these as 

 Gastropod eggs, and the form shown in figs. 1 and 2 

 has a close resemblance to the egg-capsule of the 

 common Littorina littorea. Dr. W. M. Tattersall has 

 kindly sent a sketch of the egg-capsule of L. littorea, on 

 which he has been making observations, t and this shows 

 the closest resemblance to our fig. 1 above. 



We give here the usual temperature chart of Port 

 Erin Bay, drawn from Mr. Chadwick's daily records. 



JAN. FEB. MAR. APR. MAY JUNE. JULY. AUC. SEPT OCT NOV DEC. 



310172+31 714 2128 7142128411 1825 2 916233061320274 11 1825 1 8152229 5121926 31017243171421285121926 



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YAVERACE TEMPERATURE 

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* Nordisches Plankton, Bd. I., Lief. 10, p. 17. 



t Which will be shortly published in Irish Fishery Bd. Sci. Investig. 



