THE ANIMAL KINGDOM 



369 



Fig. 203 — Volvox globator, containing developing germ cells, G. Vol vox ia 

 made up of thousands of flagellated cells arranged in a gelatinous matrix in the 

 form of a hollow sphere. The individual cells are connected by cytoplasmic 

 extensions which give the sphere a reticulate appearance. Daughter colonies 

 develop within the cavity of the sphere. 



Fig. 204. — A, Euglena viridis, a flagellate, showing the striated cuticle, c, 

 chromatophores; e, eyespot; p, pyrenoid body. (After Bourne.) B, Trypano- 

 soma lewisi, from rat's blood, b, blepharoplast, a nuclear structure. (After 

 Laveran and Mesnil.) C, Codosiga, a choanoflagellate. (After Kent.) D, 

 Noctiluca miliaris, a cystoflagellate. (After Cienkowski.) E, Ceratium cornu- 

 tum, having an armor of cellulose plates. (After Stein.) 



