,)i 



The shape o^ (he body is ;\s varied, ns in Ivjx' /I, hut 

 roiiiKhMl iiuliviihiais are iiuich more frequeni, which is lo ho 

 exphiined by the al>senee of ihr axostyie. 



The ectoph\stu and eiidophisin nrc ol' tlie same struct lire 

 as ill type .1. The slructure ol" (he un(hdatiii;j,- mcmUraiir is 

 the same as in tyj>e .1, ltn( hci-i' il more often coils s|»iraliy 

 around the nncieus in om' plane — this is a«;'ain tlie resnlt of 

 absence of tiie antai,^onistic action of the axostykv Tiie nucleus 

 of type 7? differs ill (hat all its chromatin is usnally dispersed 

 in the shape of small i^rannles in the nodes of tiu^ liniii net- 

 work. The karyosome is absent. In<livi(hials of type B are dcx oid 

 of food part ides as the precedin.^-; only in one indivi(bial did 

 I see several food inclusions. 



Type C. To this I refer the individuals with the locomotory 

 apparatus still more reduced than in type B. Such indivi- 

 duals have the appearance of large, and sometimes very large 

 amoebae with one nucleus to which is adjacent a small (se- 

 veral times smaller than in types A k B) undulating mem- 

 brane (t. If, f. 20). The axostyie and flagella are absent. 



The shape of the body and size of individuals of the type 

 C vary greatly. 



The length and width of the body in type C may be 

 expressed in the following way: 70 : 45; 75 : 50; 90 : 65; 180 : 50; 

 130:80. 



The ectoplasm and endoplasm are sharply delimited, and 

 only in rare cases do they gradually pass one into another, 

 as is the case in types A and B. The ectoplasm surrounds 

 the body of the animal in the form of a wide light border. 

 All the ectoplasm is filled with very minute vacuoles very 

 much elongated radially, and arranged although not quite 

 regularly, in parallel rows. The ectoplasm therefore acquires 

 the appearance of being radially striated. Such a structure 

 of the ectoplasm in a larger scale resembles the alveolar !»or- 

 der («Alveolarsaum») which lUitschli and other protistolo- 

 gists repeatedly found in the ectoplasm of Protozoa. 

 The endoplasm stains considerably darker than the ectoplasm. 

 This depends both on the generally darker shade of the 

 endoplasm, and on the presence of numerous minutest black 

 granules (after staining with Heidenhain's haematoxylin) in 

 it. In some places of the endoplasm very large, light vacuo- 

 les are dispersed. In the greater number of individuals of 



