4 BRITISH FRESHWATER RHIZOPODA. 



1. Difflugia oblonga Ehrenberg.* 



(Plate XVII, figs. 1-3, 7, and 8 ; PI. XIX, figs. 3 and 

 4; and figs. 33?, 36, 37?, 38, and 39 in text.) 



.Difflugia oblonga EHRENBERG Infusionsth. (1838), p. 131, t. ii. 

 f. 2 a-d; and in Abh. Akad. Wiss. Berlin, 1871 (1872), 

 pp. 241, 256 ; RYMER JONES in Cyclop. Anat. IV, 29 

 (1847), p. 10, f. 7, no. 1 ; HAYEK Handb. Zool. (1857), p. 

 42, f. 62 ; STEIN in Cams' Icon. Zootom. I (1857), t. i, 

 f. 58; HOGG Microscope, ed. 3 (1858), f. 162 B; ed. 15 

 (1898), f. 326s; CLAPAREDE & LACHMANN Etudes Inf. et 

 Rhiz. 2 (1859), p. 448; CARTER in Ann. Nat. Hist. (3) 

 XIII (1864), p. 22; ARCHER in Q. Jrn. Micr. Sci. (n.s.) 

 VIII (1868), p. 122; and in Jrn. Dublin Micr. Club, I, 3 

 (1868), p. 178; CARPENTER, Microscope, ed. 5 (1875), 

 f. 253 B; ed. 8 (1901), f. 579 B ; WYTHE Microscopist, ed. 

 3 (1877), pi. xii, f. 117 B; LANESSANHI Rev. internal. Sci. 

 VI (1880), p. 9 ; and Traite Zool., Prot. (1882), p. 52, 

 f. 41 ; PARONA in Boll. Scient. I, an. 4 (1882), pp. 52, 57 ; 

 and. in Arch. Sci. nat. (3) X (1883), p. 238; PHILLIPS in 

 Tr. Herts Nat. Hist. Soc. II, 3 (1883), p. 121 ; GLAUS 

 Lehrb. Zool. ed. 2 (1883), f. 126 (p. 163) ; ed. 6,1 (1904), 

 f. 229 (p. 228) ; (Engl. transl.) Text-book Zool. I (1884), 

 f. 126 (p. 186) ; (Fr. transl.) Traite Zool. (1884), ff. 201, 

 206 (pp. 199, 204) ; ZACHARIAS in Biol. Centralbl. IX 

 (1880), p. 58; LONGI in Atti Soc. Ligust. Ill (1892), p. 

 145 ; op. cit. V (1894), p. 18 ; and VI (1895), p. 71. 



Difflugia pyriformis PERTY ? in Mitth. nat. Ges. Bern, 1849, 

 p. 168; and Kenntn. kleinst. Lebensf. (1852), p. 187, 

 t. ix, f. 9 ; CARTER in Ann. Nat. Hist. (3) XII (1863), p. 

 249; and op. cit. (3) XIII (1864), p. 21, t. i, ff. 1-4; 

 ARCHER in Q. Jrn. Micr. Soi. (n.s.) VI (1866), p. 186; 

 and in Jrn. Dublin Micr. Club, I, 2 (1867), p. 51; PARFITT 

 in Tr. Devon Assoc. Ill (1869), p. 66; LEIDY (pars) in 

 Pr. Acad. Philad. 1874, pp. 14, 79 ; op. cit. 1877 (1878), 

 p. 307; 1879, p. 162; 1880, p. 338; 1881, p. 10; and 

 Freshw. Rhiz. N. Amer. (1879), p. 98, t. x, ff. 1-16, 18- 

 21, 26 ; t. xv, ff. 32, 33 ; t. xvi, f. 38 ; NICHOLSON Man. 

 Zool. ed. 5 (1878), p. 63, f. 8; ed. 7 (1887), p. 77, f. 18; 

 BUTSCHLI in Bronn's Thier-Reichs, I, 1 (1880), t. iii, f. 6 ; 

 HITCHCOCK Synops. Freshw. Rhiz. (1881), p. 12 ; ENTZ in 

 Biol. Centralbl. II (1882), p. 451 ; STOKES in Amer. M. 

 Micr. Jrn. Ill (1882), p. 93; TARANEK in Sitzber. bohm. 

 * See note on synonymy, Vol. I, p. 41. 



