68 BRITISH FRESHWATER RH1ZOPODA. 



Lecquereusia (Difflugia) spiralis BUTSCHLI in Bronn's Thier- 

 Reichs, I, 1 (1880), t. iii, f. 9. 



Lecquereusia spiralis TARANEK (pars) in Sitzber. bohm. Ges. 

 Wiss. 1881 (1882), p. 228; and in Abh. bohm. Ges. Wiss. 

 (6) XI (1882), 8, p. 49, t. v, if. 1, 2, 4, 6-11, 13-15, ? 16; 

 BLOCHMA.NN Mikr. Thierw. Siisswass. (1886), p. 13, t. i, f. 

 28; and ed. 2 (1895), p. 17, t. i, f. 21; LENDENFELD in 

 Pr. Linn. Soc. N. S. Wales, X (1886), p. 724; and in Tr. 

 R. Soc. N. S. Wales; RHOMBLER in Zeits. wiss. Zool. LII, 

 4 (1891), p. 518; and op. cit. LXI, 1 (1895), p. 42 etc., 

 t. iv, ff. 1, 3, 4, and text-f. 9 (p. 97) ; SCHEWIAKOFP in 

 Mem. Acad. St. Petersb. (7) XLI (1893), 8, p. 98; 

 LEVANDER in Acta Soc. Fauna Fenn. XII (1894), 2, p. 19; 

 op. cit. XIX (1900), 2, p. 7 ; and XX (1901), pp. 8, 12 ; 

 DELAGE & HEROUARD Traite Zool. concr. I (1896), p. 106, 

 f. 129; SCHAUDINN in Deutsch-Ost-Africa, IV, 2 (1897), 19, 

 p. 10 ; ANDRE in Jahresb. nat. Ges. Graubiind. XLI (1898), 

 p. 57 etc.; DADAY in Termesz. Fiizetek, XXI (1898), 

 Suppl. pp. 5, 9 ; STENROOS in Acta Soc. Fauna Fenn. 

 (1898), 1, p. 35 etc. ; AVERINTZEV in Trudui S.-Peterb. 

 Obshch. XXX, 1 (1900), p. 239; op. cit. XXXVI (1906), 

 2, p. 173; and in Ber. Siisswass. Nat. Ges. St. Petersb. I 

 (1901), p. 214 ; LAGERHEIM (pars) in Forh. Geol. Foren. 

 Stockholm, XXIII (1901), p. 514; and op. cit. XXIV 

 (1902), p. 348; PENARD in Arch. Sci. nat. (4) VII (1899), 

 p. 256 etc. ; Faune Rhiz. Leman (1902), p. 326, ff. 1-10 

 (p. 328) ; and in Pr. R. Soc. Edinb. XV, 8 (1905), p. 594 ; 

 G. S. WEST in Jrn. Linn. Soc., Zool. XXVIII (1901), p. 321; 

 and in Ann. Scott. Nat. Hist. 1905, p. 90 ; CDSHMAN in 

 Amer. Natur. XL (1906), p. 372 ; HARTOG Prot. in Cambr. 

 Nat. Hist. I (1906), p. 55; SCHORLER & TnALLWiizin Ann. 

 Biol. Lacustre, I, 2 (1906), p. 260; SCHOUTEDEN in Ann. 

 Biol. Lacustre, I, 3 (1906), p. 339, f. 11; MURRAY in 

 Ann. Scott. Nat. Hist. 1907, p. 94 ; SCHNEIDER in Arch. 

 Biontol. II, 1 (1908), p. 58. 



Test homogeneous ; in lateral outline globose or 

 ovoid ; slightly compressed, produced into an un- 

 symmetrical neck, and so constricted as to give the 

 impression of a spiral ; its membrane chitinous and 

 transparent, with a meshwork of short curved rods, 

 forming minute ridges, closely compacted (described 

 by Leidy as " vermiform pellets "), the neck, below the 

 constriction, with a slight elevation from which the out- 



