DIFFLUGIA INFLATA. 23 



Var. inflata Penarcl. (Plate XVIII, fig. 14.) 



Difflugia proteiformis var. acuminata WALLICH in Ann. Nat. 



Hist. (3) XI (1863), p. 453, t. x, f. 13. 

 Difflugia acuminata LEIDY (pars) Freshw. Rhiz. N. Amer. 



(1879), p. 109, t. xiii, ff. 2, 5, 14-; LEVANDEE (pars) in 



Acta Soc. Fauna Fenn. XII (1894), 2, p. 15, t. i, f. 9 ; 



AVERINTZEV (pars) in Trudui S.-Peterb. Obshch. XXXVI 



(1906), 2, p. 193. 

 Difflugia acuminata var. amphora PENARD in Mem. Soc. 



Geneve, XXXI (1890), 2, p. 139, t. iii, ff. 55-63; G. S. 



WEST in Jrn. Linn. Soc., Zool. XXIX (1903), p. 113. 

 Difflugia acuminata var. inflata PENARD in Rev. Suisse Zool. 



VII, 1 (1899), p. 29, t.' iii, f. 1; Faune Rhiz. Leman 



(1902), p. 234, f. 10 (p. 233) ; in Pr. R. Soc, Edinb. 



XXV, 8 (1905), p. 594 ; and Sarc. grands Lacs (1905), p. 



14, f. (p. 15) ; SCHOUTEDEN in Ann. Biol. Lacustre, I, 3 



(1906), p. 346 ; ZscHOKKEin Arch. Hydrobiol. II, 1 (1906), 



p. 3. 



Test of thin chitinous material, incrusted with sandy 

 and muddy particles ; shorter than the type and broader 

 in proportion, the breadth being little more than half 

 the average length, swollen above and suddenly con- 

 tracted towards the acute or conical apex, which is 

 sometimes furnished with a tubular horn ; the struc- 

 ture, in its lower half, narrowed convexly downwards 

 to the truncated mouth, which is neither expanded nor 

 urceolate. Nucleus and pseudopodia normal the 

 latter usually long. 



Dimensions: Length 230-250 /<. 



In bog-pools. Giggleswick, West Yorkshire (G. S. 

 West). Sychnant Pass, Carnarvonshire, 1907. Loch 

 Ness, Scotland (D. J. Scourfield). 



This distinct form, described by Penard in ' Faune 

 Rhizopodique du Bassin du Leman ' (1902) under the 

 name here given, is the var. amphora of his ' fitudes 

 sur les Rhizopodes d'eau douce ' (1890). The latter 

 name had previously been given by Leidy (1879) to 

 a form of D. urceolata Carter. The variety inflata is 

 very scarce, according to our experience, in Britain. 



