64 



ZOOLOGY 



SECT. 



give off oxygen and produce starch and other food- stuffs, some 

 of which must make their way by diffusion into the protoplasm 

 of the Radiolarian. 



APPENDIX TO THE RHIZOPODA. 

 CHLAMYDOMYXA AND LABYRINTHULA. 



Chlamydomyxa (Fig. 48), of which two species have been described, has been 

 found living on Bog-mosses (Sphagnum) in Ireland and in Germany and 



FIG. 48. CMamydomyxa labyrinthuloides. A, active phase ; c.w. cell-wall ; f. frag- 

 ment of Alga ingested as food ; sp. spindles in course of pseudopods ; B, resting-'stage 

 numerous individuals in the cells of a fragment of Sphagnum ; a, specimen completely enclosed 

 in cell ; b and c, specimens which have emerged through the ruptured cell-wall ; C, specimen 

 multiplying by budding; D, by binary fission ; E, by internal fission. E may represent a 

 stage in spore-formation. (A, after Archer, B E after Geddes.) 



Switzerland. It may occur either in the active or in the resting condition. In 

 the latter (B, a, b, c) it consists of a mass of protoplasm with a number of 

 nuclei surrounded by a laminated wall of cellulose (p. 14). In the protoplasm are 



