300 



PROTOZOOLOGY 



T. verrucosa Stokes (Fig. 120, e). Lorica spherical, with numerous 

 knob-like attachments ; no neck ; 24-25/* in diameter. 



T. vermiculosa Palmer (Fig. 120, /). Lorica spherical; with many 

 sausage-form markings; 23m in diameter. 



Genus Cryptoglena Ehrenberg. Body rigid, flattened; 2 band-form 

 chromatophores lateral; a single flagellum; nucleus posterior; 

 among freshwater algae. One species. 



C. pigra E. (Fig. 120, g). Ovoid, pointed posteriorly; flagellum 

 short; stigma prominent; 10-15/t by 6-10/t; standing water. 



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Fig. 120. a, Lepocinclis ovum, X430 (Stein); b, Trachelomonas hispida, 

 X430 (Stein); c, T. urceolata, X430 (Stokes); d, T. piscatoris, X520 

 (Fisher); e, T. verrucosa, X550 (Stokes); f, T. vermiculosa, X800 (Palmer); 

 g, Cryptoglena pigra, X430 (Stein); h, Ascoglena vaginicola, X390 (Stein); 

 i, Eutreptia viridis, X270 (Klebs); j, E. marina, X670 (da Cunha); k, 

 Euglenamorpha hegneri, X730 (Wenrich). 



Genus Ascoglena Stein. Encased in a flexible, colorless to brown 

 lorica, attached with its base to foreign object; solitary; without 

 stalk; body ovoidal, plastic; attached to test with its posterior end; 

 a single flagellum; a stigma; numerous chromatophores discoid; 

 with or without pyrenoids; reproduction as in Trachelomonas; 

 fresh water. 



A. vaginicola S. (Fig. 120, h). Lorica about 43/i by 15/*. 



Genus Colacium Ehrenberg. Stalked individuals form colony; 

 frequently attached to animals such as copepods, rotifers, etc. ; stalk 

 mucilaginous; individual cells pyriform, ellipsoidal or cylindrical; 

 without flagellum; a single flagellum only in free-swimming stage; 

 disco idal chromatophores numerous; with pyrenoids; multiplication 



