24 TLAOELLATES A?fD ALG.l^. OF THE BlKMIXaHAM DISTRICT 



P. Takedana G. S. West in Journ. Bot. 1916, p. 8, fig. 6 

 ( = P. ancfulosa West, ihid. 1912, p. 330, non Dang.). 6. 



WK. Earlswood Lakes. New to Britain ; found also in Surrey. 



P. Cliodafi Lemm. 10. 



ST. Gi-eat Ban- Park. New to Britain ; see West, /. c. 1912, 

 p. 331. 



P. aculeata Lemm. 



"ws. Spring Grove Pools, near Stournort. See Griffiths, in Linn. 

 Soc. Journ., Bot. 1916, p. 429, pi. 34, figs. 3-5. 



P. ovalis Griffiths, ihid. p. 430, pi. 34, fig. 6. 



ws. Spring Grove, Lower Pool, in very small numbers, associated 

 with P. aculeata. 



GoNiUM Miill. 



G. prctorale Miill. 5-7, 10, 11. 



WK. Longmoor Pool, Sutton Park ; Berkswell ; Lapworth. 

 ws. King's Norton ; Barnt Green. ST. Great Barr Park. 



G. social e (Duj.) AVarm. 5, 10, 11. 



WK. Lapworth. ws. King's Norton. 



G. lacustre G. S. West. "3-5. 



WK. In the plankton, Sutton Park ; Lapworth ; Earlswood ; 

 Berkswell. ws. Barnt Green, etc. 



Paxdokixa Borv. 



P. Morum (Miill.) Borv. 1-6, 10, 11. 



WK. Common in many pools. ws. Quinton ; King's Ncjrton ; 

 Barnt Gi'een ; Trimj^ley, etc., etc. st. Great Barr Park. 



EuDOEiXA Ehr. 



H. elegans Ehrenb. 1-12. 



WK. In the plankton, Bracebridge Pool, Sutton Park ; Sutton 

 Coldfield, Berkswell, etc., etc. ws. King's Norton ; Harvington 

 Hall ; Trimpley, etc. 



In certain pools at Sutton Coldfield small ellipsoidal colonies were 

 found. 



Pleodorina Shaw. 

 P. iJlinoisensls Kofoid. 3, 4. 



WK. Harborne, in cart-ruts in a field; see Grove, in New Phvtol 

 1915, xiv. 169 and 1917, xvi. 180. 



YOLTOX Ehr. 



V. aureus Ehrenb. 1-6, 8, 9. 



WK. Bracebridge Pool, Sutton Park ; Harborne ; Yardley ; Olton 

 Reservoir, etc. Not uncommon in spring with antheridia and 

 oospores, ws. King's Norton, pond near Hawkesley Hall, with male 

 colonies ; Barnt Green ; Trimpley, etc. 



This species can be found all the year round, even under thick ice, 

 bv those wlio know its haljits. 



