AMGBA GORGONIA. 53 
and differed widely from the hyaline pseudopodia of 
most of the lobose Rhizopods. 
Dimensions: Average diameter of body (fig. 3) 
40-50 «3 including pseudopodia about 100 p. 
In long-kept Sphagnum from Dunham, Cheshire, 
June, 19038. 
In its movements this species is very rapid. It 
resembles, in some aspects, an exaggerated A. limaz. 
Within the endosare there may be observed a 
variable number of brilliant granules, which in the 
resting-phase extend along the arms, even to their 
extremities, together with small vacuoles and chloro- 
phyl corpuscles. The contractile vesicle and nucleus 
are small and inconspicuous; the latter is spherical. 
5. Ameba striata Penard. 
(Plate ITI, figs. 6 and 7.) 
? Amba striolata Pmrrry Kenntn. kleinst. Lebensf. (1852), 
p. 188, t. viii, f. 15; Parona in Boll. Scient. I, an. 2 (1880), 
. 24, 
hioabe verrucosa (pars)° Lerpy Freshw. Rhiz. N. Amer. 
(1879), t. iii, f. 37. 
Ameba striata Peyarp in Mém. Soc. Phys. Genéve, XXX], 
no. 2 (1890), p. 127, t. ii, ff. 81-34, and Faune Rhiz. 
Léman (1902), p. 127, ff.; Raumsier in Arch. f. Entwick. 
VII (1898), pp. 123, 191, 262, ff. 38, 39, 66. 
Body compressed, ovoid, narrowed and rounded 
posteriorly, but not exhibiting any caudal bulb or 
expansion. The nucleus round, posteriorly situated, a 
little in advance of the contractile vacuole, which 
attains a considerable size and is pellucid or pale 
bluish. The anterior region, when the animal is 
moving actively, consists of a broad expansion of clear 
ectoplasm. A characteristic feature of this organism 
is the presence of a series of delicate longitudinal 
lines (usually four) on the surface of the ectoplasm, 
which appear and disappear with the movements of 
the animal, indicating, in the opinion of Dr. Penard, 
the existence of an extremely fine pellicle. 
