INDEX 



Alcyonium (British), 101 

 Alcyonium ceylouicum, 101 



Bohn, G. 5 64 

 Butler, Samuel, 49 



Carteria sp., 129 

 Chemical stimulators (hormo- 

 nes), 135 



Chemotactism, 139 

 Chlamydomonadinea9, 128 

 Chlainydomonas, 129 

 Chlorophyll, 87 

 Chloroplast, 85, 86, 105 

 Convoluta paradoxa : 



Background, influence of, 45, 

 48, 50 



Behaviour in constant dark- 

 ness, 65 



Bristles, 8 



Cilia, 7 



Digestion of green cells by, 

 83, 97 



Digestive system, 11 



Eggs, 13; periodicity of pro- 

 duction of, 24 



Egg-laying, conditioned by il- 

 lumination, 31 



Eyes, 9, 54 



Fat, 89 



Feeding habits, 81, 83, 97, 98 



Convoluta paradoxa (cont.): 

 General aspect, 5 

 Glands (pigmented), 9, 54 

 Gravi-perception, 10 

 Gullet, 11 ' 

 Habitat, 7, 19 

 Mouth, 11 

 Otocyst, 9 

 Paradoxa zone, 17 

 Periodicity of egg-laying, 24, 



34 



Phototropism, 42 

 Secretion of fat by yellow- 

 brown cells of, 92 

 Starvation, resistance to, 94 

 Tidal migration, 21 

 Tropistic response to light, 



42 

 Uric acid, effects on egg-laying, 



150 



Vacuoles, 11 

 Yellow-brown cells of, 75, 84, 



91, 95, 147 

 Convoluta roscoffensis : 



Background, influence of, 45, 



48, 50 



Chlorophyll in, 87 

 Cilia, 7 

 Dark-rigor, 60 

 Digestion of yellow-brown cells 



by, 95 



