20 TRANSACTIONS 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 supplied the subjoined list 

 of Rhizopoda and Desmidiacese found in a quantity of 

 moss from the little cascade which falls over the cliff 

 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 by Mr. Wailes seems to indicate a 

 promising field of research. 



RHIZOPODA. 



LOBOSA. FlLOSA. 



Arcella vulgaris. Euglypha alveolata. 



,-. ,- var. gibbosa. „ laevis. 



„ discoides. „ „ , with apical spines. 



C entropy xis aculeata. „ sp. no v. 



,, arcelloides. Trinema enchelys. 



Difflugia oblonga. ,. lineare. 



„ „ var. lacustris. Cyphoderia ampulla. 



„ globulus. „ „ var. major. 



,, constricta. „ „ other varieties, 



„ pristis. Sphenoderia dentata. 



„ lucida. Pamphagus hyalinus. 



., rubescens. 

 Pontigidasia compressa. 

 „ bryophila. 



Pyxidicula operculata. 

 Quadrula symmetrica. 



„ irregularis. 



Heleopera petricola. 



DESMIDIACEiE. 



Cosmarium speciosum. Cosmarium laeve. 

 „ formulosum. „ Botrvfo. 



