34 BRITIShI FEESHWATER RHIZOPODA. 



Two forms of this species occur ; in one the test 

 has an elliptical transverse section and an elliptical 

 aperture, in the other the transverse section and 

 aperture are both sub-circular ; but the pointed aper- 

 ture-scales (fig. 122) are always characteristic and dis- 

 tinguish it from small glabrous forms of other species 

 and from E. rotunda. 



12. Euglypha ciliata (Bhrenberg) Leidy. 



(Plate XXXVII; PI. XXXVIII, figs. 1-7; PI. XXXIX, 

 figs. 8-11; and figs. 119, 123, and 124 in text.) 



Difflugia ciliata 

 Ehbenbeeg in Ber. Acad. Berlin, 1848, p. 379 ; in Abli. Akad. Berlin, 



1871 (1872), p. 143, pi. iis, f. 26. 

 Eiiglyplia setigera 



Pebtt (?) in Math. nat. Ges. Bern, 1849, p. 1.58; (pars) Kenntn. 



kleinst. Lebensf. (1862), p. 187, pi. viii, f. 19 6. 

 Maggi (?) in Rend. R. 1st. Lomb. (2) IX (1876), p. 543 ; in Atti Soc. 



Ital. XXI (1878), p. 319. 

 ZACHA.KIAS in Forsclib. Plon, X (1903), pp. 241-242, pi. viii, f. 19. 

 Difflugia pilusa 



Ehbenbbkg Micvogeol. (18S4), pi. xxxiv, v b, f . 6 ; in Abli. Acad. 



BerHn, 1871 (1872), pi. ii b, f . 28. 

 Difflugia Seiigerella ciliata 



Eheenberg in Abh. Acad. Berlin, 1871 (1872), p. 247. 

 Difflugia Setigerella pilosa 



Ehbenbebg in Abh. Acad. Berlin, 1871 (1872), p. 247. 

 Euglypha ciliata 

 Leidy (pars) in Proc. Acad. Philad. 1878, p. 172 ; op. cit. 1879, p. 163 ; 



1880, p. 339; (pars) Freshw. Rhiz. N. A-mer. (1879), pp. 214-218, 



pi. xxxvi, ff. 8-10, 16, 17, 20-22 ; pi. xxxvii, f. 30. 

 Hitchcock Synops. Freshw. Rhiz. (1881), pp. 36-37. 

 Pbnabd (pars) in Mem. Soc. Geneve, XXXI, 1, ii (1890), pp. 178-179, 



pi. ix, ff. 41-48 ; in Jahrb. nassau. Ver. Naturh. XLIII (1890), p. 71 ; 



in Amer. Natur. XXV (1891), pp. 1071, 1075 ; in Rev. Suisse Zool. 



IX (1901), p. 237 ; Fanne Rhiz. Leman (1902), pp. 499-502, 3 figs.; 



in Arch. Protist. II (1903), p. 269 ; in Proc. Roy. Soc. Bdinb. XX;V 



(1905), p. 596; Sarcodines in Cat. Invert. Suisse, pp. 101-102; in 



Jrn. R. Micr. Soc. 1907, p. 278; in Arch. Protist. XVII (1909) 



p. 265; in Brit. Antarct. Exped. I (1911), pp. 220, 235; in Detix. 



exped. antarct. franf. (1911), pp. 4, 9 

 LOBD (pars) in Sci. Gossip, XXVII (1891), pp. 267, 268, fE. 217, 218. 

 Cash in Trans. Manch. Micr. Soc. 1891 (1892), p. 52, pi. ii, f. 29. 

 ScHBvriAKOFF in Mem. Acad. St. Petersb. (7) XLI (1893), viii, pp. 6, 



78,98. ^ 



Fbic & VivEB in Arch. Landesf. Bohmen, X (1897), pp. 46-69' 



passim, t. 17. 

 ScouBFiBLD in Proc. Zool. Soo. Lond. 1897, p. 788. 

 Andbe in Jahresb. Ges. Granblind. (n. r.) XLI (1898), pp. 58, 59. 



