32 BlilTlSH FRESHWATER RHIZOPODA. 



Test small, oviform, moderately compressed, glab- 

 rous ; aperture circular, bordered by eight pointed 

 scales; body-scales oval, about twice as long as broad, 

 slightly imbricated ; plasma and pseudopodia normal ; 

 nucleus containing a single nucleole. 



Length 22-52 ju,; breadth 0-5 to 07 of the length; 

 thickness 0'6 to 0'7 of the breadth ; aperture 6-12 ju, 

 in diameter; body-scales 5-8 /i, in length, 2'5 to 4 /i, 

 in breadth ; nucleus 8-10 /x, in diameter. 



RaMtat. — Mosses in damp and wet situations. 



England. — Isle of Man ; Yorkshire ; Shropshire ; 

 Bedfordshire ; Cambridgeshire ; Hertfordshire ; Buck- 

 inghamshire ; Oxfordshire ; New Forest, Hampshire ; 

 Isle of Wight; Somersetshire; Devonshire; Cornwall. 



Fia. 121. — Forms of aperture-scales of Euglypha rotunda. < 1000. 



Scotland. — Shetlands; Outer Hebrides; Inverness- 

 shire, Perthshire, and Argyllshire {Brown) ; Skye, 

 Inner Hebrides ; Dumfriesshire. 



Ireland. — Donegal; Armagh; Mayo; Galway; 

 Limerick ; Kerry. 



11. Euglypha laevis (Ehrenberg) Perty. 



(Plate XXXIV, figs. 10-12; PI. XXXIX, figs. 5-7; 



and figs. 118 and 122 in text.) 



Difflugia Isevis 



Eheenbbeg in Ber. Akad. Berlin, 1845, p. 307; Microgeol. (1856), 

 pp. 12, 33; in Abh. Akad. Berlin, 1871 (1872), pp. 253-254, pi. iii, i, f . 5. 

 Eughipha Imvis 



Pbbty in Mitth. iiat. Ges. Bern, 1849, pp. 163, 164, 168 ; Kenntn. 

 kleinst. Lebensf. (1852;, p. 187, pi. viii, f. 18. 



Paeona in Boll. Scient. II (1880), p. 24. 



Maggi in Rend. R. 1st. Lomb. (2) XXI (1888), p. 301. 



Pbnard in Mem. Soc. Geneve, XXXI, 1, ii (1890), p. 181, pi. ix, ff. 93- 

 96 ; in Amer. Natuv. XXV (1891), p. 1071 ; in Jalirb. nassan. Yer. 

 Natm-k. XLIII (1891), p. 71; in Rev. Suisse Zool. VII (1899), i, 

 p. 110 ; op. cit. IX (1901), p. 237 ; Faune Rhiz. Leman (1902), pp. 

 512-513, 2 figs. ; in Arch. Protist. II (1903), p. 269; op. cit. IX 

 (1909), p. 265 ; in Brit. Antarot. Exped. I (1911), pp. 204, 207, 220, 

 236 ; in Deux, exped. antarot. fran9. (1911), pp. 4, 10. 



