ALLOGROMIA FLUVIALIS. 139 



CALKINS Protozoa (1901), p. 285. 



CHAPMAN Foraminifera (1902), p. 70. 



PENARD Faune Rhiz. Leman (1902), pp. 554-556, 3 figs. 



SCHMIDT in Arch. Protist. XXIX (1913, p. 223. 

 Gromia terricola 



LEIDY in Proc. Acad. Philad. 1874, p. 88; in Arch. Sci. nat. LII 

 (1875), p. 167 ; Freshw. Rhiz. N. Amer. (1879), pp. 277-281, pi. 

 xlvii, ff. 1-4. 



LAWSON in M. Micr. Jrn. XIII (1875), pp. 87-88. 



HITCHCOCK Synops. Freshw. Rhiz. (1881), p. 51. 



BLANC in Arch. Sci. nat. (3), XYII (1886), p. 365. 



BLOCHMANN Mikr. Thierw. Siisswass. (1886), p. 15 ; ed. 2 (1895), 

 p. 19, pi. i, f. 28. 



SCHEWIAKOFF in Mem. Acad. St. Petersb. (7) XLI, vm (1893), 



p. 98. 

 Allogromia fluvialis 



RHUMBLER in Arch. Protist. Ill (1903), p. 206, f. 22. 



PENARD Sarcodines in Cat. Invert. Suisse (1905), pp. 119-120. 

 Allogromia fluviatilis 



AVERINTZEFF in Trudui S.-Peterb. Obshch. XXXVI, n (1906), 

 pp. 325-326. 



SCHOUTEDEN in Ann. Biol. lacustre, I (1906), p. 375. 



HARTOG in Encycl. Brit., ed. 11, XXIII (1911), p. 248, . 7 (4). 

 Lieberkuhnia fluvialis 



PENARD (pars) in Arch. Protist. IX (1909), pp. 293-296 (non fig.). 



Test membranous, spherical or ovoid, transparent, 

 supple, smooth or sparsely covered with silicious 

 particles ; plasma slightly yellow, granular, usually 

 containing food-particles, nearly filling the test ; aper- 

 ture not observed; peduncle not observed; nucleus 

 single, large, and granular ; contractile vesicles numer- 

 ous; pseudopodia long, anastomosing, often enveloping 

 the test. 



Length usually 80-1 20 /A, but may vary between 50 

 and 250 /A. 



Habitat. Aquatic vegetation and mosses. 



ENGLAND. Brigg, Lincolnshire (West). 

 IRELAND. Connemara (Archer). 



Individuals found in mosses seem to have tests better 

 protected by extraneous particles than those living 

 amongst Alga3. 



Penard's identification* of Gromia fluvialis Dujardin 

 with Gromia terricola Leidy has been adopted. 



* 'Archiv. f. Protist. 5 VII (1909), pp. 293-296. 



