20 TRAXSACTIOXS LIVERPOOL BIOLOGICAL SOCIETY. 



" The various branches of the work of the Station, 

 including the collection and preservation twice a week of 

 Plankton gatherings in the bay, have been carried on 

 successfully throughout the year. The collections have 

 been forwarded periodically to Mr. Andrew Scott to 

 be examined in connection with Professor Herdman's 

 ' Intensive Study of the Plankton.' 



" About a year ago Mr. G. H. Wailes, who is com- 

 pleting the Monograph on the British Freshwater 

 Rhizopoda begun by the late Mr. James Cash and 

 published by the Ray Society, asked me to send him 

 samples of damp moss from water courses and boggy 

 places in the neighbourhood of Port Erin. I did this, 

 and Mr. Wailes has kindly sup])lied the subjoined list 

 of Rhizo})oda and Desmidiacese found in a quantity of 

 moss from the little cascade which falls over tlie cliif 

 close to the old harbour workshops. Very little is known 

 of the freshwater Rhizopoda of the Isle of Man, and the 

 list of species found l)y Mr. AVailes seems to indicate a 

 promising field of research. 



RHIZOPODA. 



LOBOSA. FiLOSA. 



Arcdla vulgaris. Eiujli/plin alvcolnta. 



,. ,, var. fjihhosa. „ htevis. 



,, discoides. „ „ , with apical spiiieis. 



Centropyris aculeata. „ sp. nov. 



„ arcelloides. Trinema enchelyn. 



Diffiugia oblonga. ,. lincare. 



„ „ var. lacustris. CUjphoderia ampulla. 



„ globulus. „ „ var. major. 



,. constricta. „ „ other varieties, 



„ pristis. Sphenoderia deniata. 



„ lucida. Pamphagus hyalinus. 



., rubcscens. 

 Pontigulasia compressa. 

 „ hryophila. 



Pyxidicula operculata. 

 Quadrula symmetrica. 



„ irregularis. 



Heleopera petricola. 



dp:smidiace.^^. 



Coamarium speciosum. Cosmarium lievr. 



„ jormulosum. „ BotruUs. 



