AMCEJJA GORGONIA. 53 



and differed widely from the hyaline pseudopodia of 

 most of the lobose Rhizopods. 



Dimensions : Average diameter of body (fig. 3) 

 40-50 /A; including pseudopodia about 100 /x. 



In long-kept Sphagnum from Dunham, Cheshire, 

 June, 1903. 



In its movements this species is very rapid. It 

 resembles, in some aspects, an exaggerated A. lim,<\ 



Within the endosarc 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. Amoeba striata Penard. 

 (Plate III, figs. 6 and 7.) 



? Amceba striolata PERTY Kenntn. kleinst. Lebensf. (1852), 



p. 188, t. viii, f. 15 ; PARONA in Boll. Scient. I, an. 2 (1880), 



p. 24. 

 Amoeba verrucosa (pars) LEIDY Freshw. Rliiz. N. Amer. 



(1879), t. iii, f. 37. 

 Amceba striata PENARD in Mem. Soc. Phys. Geneve, XXXI, 



no. 2 (1890), p. 127, t. ii, ff. 31-34, and Faune Rliiz. 



Lemaii (1902), p. 127, ff . ; RHUMBLER iu 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. 



