16 BRITISH FRESHWATER RHIZOPODA. 



or two rows of 8-12 finely-serrated scales ; plasma 

 normal ; nucleus large, containing one nucleole which 

 is often central and sometimes granular; the pseudo- 

 podia long, fine, radiating, generally straight, seldom 

 branched. 



Length, 45-100 /u, ; diameter 24-50 /x ; aperture 

 10-20 /A; nucleus 10-15 /A in diameter; scales 10-16/x, 

 in longest diameter. 



Habitat. Mosses, sphagnum, and submerged vege- 

 tation ; generally distributed. 



ENGLAND. Cumberland and Westmorland (Brown); 

 Isle of Man ; N. and W. Yorkshire ; Cheshire (Cash) ; 



113. 

 xTTx 



112. 



FIGS. 112-114. Euglypha tuberculata. 112, circular type of body-scales, 

 x 1000. 113, oval type, x 1000. 114, aperture-scale x 2000. 



Derbyshire (Brown) ; Shropshire; Bedfordshire; Cam- 

 bridgeshire ; Essex {Scour field) ; Kent ; Devonshire ; 

 Cornwall. 



SCOTLAND. Shetlands; Orkneys; Eoss-shire (West); 

 Hebrides! (West); Inverness-shire (West, Penard) ; 

 Perthshire (West, Brown); Argyllshire (Brown); 

 ? Forth area (Evans) ; Ayrshire, Kirkcudbrightshire, 

 and Wigtonshire (Brown). 



IRELAND. Mayo; G-alway; Wicklow; Kerry. 



The glabrous, uncompressed, ovoid test and circular 

 or broadly-oval scales (figs. 112 and 113) readily dis- 

 tinguish E. tuberculata from all other species of 

 Englypha. 



In the United States a variety occurs (var. cirrata 



