34 General Morphology of the Protozoa 



Fig. 1. 17. A, E, F, I. Chiomatophores in Chlamydomonas agloeformis, 

 C. umbouata, C. inversa and C. bicocca; diagrammatic (after Pascher). 

 B, C. Compound pyrenoids of Pyramidomonas montana, with and without 

 starch deposits; xl200 (after Geitler). D. Granular stigma of Eiiglena; 

 diagrammatic. G. Chromatophores in Euglena geniculata (?); xl500 (after 

 Hollande). H. Ocellus with granular pigment in Protopsis neapolitana; 

 x550 (after Kofoid and Swezy). J. Chromatophore "network" in Peri- 

 dinium umbonatuni; diagrammatic optical section (after Geitler). K. Pe- 

 ripheral chromatophores in Cnlacium vesiculosum; xl380 (after Johnson). 

 L. A chromatophore with pyrenoid and paramylum shell in Euglena 

 americana; diagrammatic (after Hollande). M. Ocellus with pigment-cup 

 in Erythropsis cornuta; x320 (after Kofoid and Swezy). N. Amphosorae 

 in Cryptomonas dangeardii; chromatophores omitted; x2700 (after Hol- 

 lande). Key: a, amphosome; cli, chromatophore; cp, pigment-cup; g, gran- 

 ular pigment; /, lens; n, nucleus; p, paramylum; py, pyrenoid; s, starch; 

 st, stigma. 



