56 BRITISH FRESHWATER RHIZOPODA. 



affinity between it and the typical Hi/alodiscus rubi- 

 cundus. Amoeba guttula is commonly met with amongst 

 decaying vegetation, in ponds. 



7. Amoeba limicola Rhumbler. 

 (Fig. 16.) 



Amoeba limicola RHUMBLER in Arch. f. Entwick. VII (1898), 

 p. 145, etc., ff. 17, 22, and in Zeits. Allg. Physiol. II 

 (1902), p. 183; CALKINS Prot. (1901), pp. 81, 85, f. 15 a; 

 PENARD Faune Rhiz. Leman (1902), p. 40, ff. 



Animal more or less globular, changing to oval or 

 ellipsoid by expansions of the ectoplasm, such expan- 

 sions being lobular, or formed by irruptions of the 



FIG. 16. Amceba limicola. x about 475. 



internal plasma through the body-surface (hernia-like). 

 Nucleus as in the preceding species. 



Dimensions : Length 45-55 /a ; average breadth 

 about 35 /it. 



Not common; occasionally met with in pools and 

 sphagnum bogs. 



The peculiar hernia-like pseudopodia, and the broad 

 frontal expansions of the ectoplasm, are characters 

 which seem to justify the separation of this from the 

 preceding and other allied species. The pseudopodium, 

 emanating from the surface of the body, resembles a 

 miniature eruption. Through the breach made, the 

 granular endoplasm, in its flow, recoils on either side 

 upon the spherical body, instead of forming a digitate 

 prolongation. 



