62 



THE INVERTEBRATA 





f-vac.-/- 



Fig. 47. Zoomastigina. A, Mastigamoeba aspera, x about 300. B, Oikomonas 

 termo, x 2000. C, Monas vulgaris, x 2000. D, Bodo saltans, x 2000. E, Try- 

 panosoma hrucei, x 2800. F, Crithidia sp., x 2300. After various authors, 

 with modifications, ba.gr. basal granules of flagella ; bri. bristle-like processes 

 borne by the surface of the protoplasm; c.vac. contractile vacuole ;/.z;ac. food 

 vacuole; fl. flagellum; fl.' trailing fiagellum; M. position of mouth-spot; 

 nu. nucleus; p.by. parabasal body; ^5. pseudopodium ; rh. rhizoplast; u.me. 

 undulating membrane. 



