101 



A)np}iidinium operculalutn, Clapaivdc aiul Lachinaiiii. Small 

 patches of sand coloured by Amphidinium operculatmn were found 

 by Professor Meek at the northern side of Cullercoats Bay on 25th 

 Ma}^ These patches remained for some days, but with the advent 

 of the spring tides they gradually disappeared. Length, '035-'03 

 mm. 



