AMG@BA FLUIDA. 9 
Gruber first found this species in sea-water; it has 
been recorded from Switzerland by Penard, and it 
occurs in the United States. 
2. Ameba granulosa Gruber. 
(Vol. I, Plate I, fig. 3; Pl. III, fig. 2.) 
Ameba proteus 
Lerpy (pars), Freshw. Rhiz. N. Amer. (1879), p. 35, pl. i, f. 9. 
Ameba granulosa 
GRUBER in Zeits. wiss. Zool. XLI, 2 (1884), p. 218, pl. xv, f. 46. 
PznarpD Faune Rhiz. Léman (1902), pp. 46-47, 3 figs., in Proc. R. 
Soc. Edinb. xxv, 8 (1905), pp. 595, 598; Sarcodinés in Cat. Invert. 
Suisse (1905), p. 14. 
Ameba proteus var. granulosa 
Casu Brit. Freshw. Rhiz. I (1905), pp. 47-48, pl. i, £.3; pl. iii, f. 2. 
Waites in Jrn. Linn. Soc., Zool. XXXII (1913), p. 202. 
Body attaining a considerable size, the plasma of 
a dark colour due to large numbers of fine included 
granules, sometimes also containing green bodies but 
seldom other inclusions; the form usuaily elongate 
with few or no lateral, lobose processes ; nucleus large, 
single, spherical, granular; contractile vesicles one 
or sometimes two in number. 
Length up to 400 » or 500 p, seldom less than 
LOO: m. 
Habitat.—Ponds, ditches, etc. Not common. 
This species is adequately represented by Cash in 
Vol. I, Plate I, fig. 8, and Pl. III, fig. 2, the latter 
figure being the form perhaps most often seen; its 
dark colour, usually large size, and the rapid stream- 
ing of the fine granules with which the plasma is 
crowded render it conspicuous and easily recognized. 
The spherical nucleus also serves to distinguish it 
from A. proteus, which has an ovoid one; Penard states 
that many of the small granules under a high magni- 
fication can be recognized as small bicuspid crystals. 
When moving, the hinder part is usually terminated 
‘by a tufted or mulberry-shaped extremity, as stated 
-by Cash. 
