Fic 31.—Ameeboid movements of young egg-cells. a, Ameeboid ovum of Hydra 
(from Balfour, after Kleinenberg) ; 6, early ovum of Zoxcopneustes variegains, with 
pseudopodia-like processes (from Balfour, after Selenka); ¢ ovum of Zoxopneustes 
“ividus, more nearly ripe (from Balfour, Hertwig). At to A 4, the primitive egy 1 
of a Chalk-Sponge (Leuculmis echinus), in four successive conditions of motion. 
B1 to B8, ditto of a Hermit-Crab (Chondracanthus cornutus), in eight successive 
stayes (after E. von Beneden), C1toCs, ditto of a Cat, in five successive stages 
(after Pfluger). D, ditto of Trout; E, ofa Hen; FP, of Man. The first series is taken 
from the Zacycl, Brit.; the second from Hackel’s Evolution of Man. 
