POLYMASTIGINA 265 



C. hettencourti da Fonseca. In rats and mice. 

 C. cuniculi da Fonseca. In rabbits. 

 C. caprae da Fonseca. In goat. 



C. gallinarum Martin et Robertson. 11-20/i by S-Qfj.; in domes- 

 tic fowls. 



Family 4 Callimastigidae da Fonseca 



Flagella 12 or more; in stomach of ruminants or in caecum and 

 colon of horse. 



Genus Callimastix Weissenberg. Ovoid; compact nucleus 

 central or anterior; 12-15 long flagella near anterior end, vibrate 

 in unison. Weissenberg (1912) considered this genus to be related 

 to Lophomonas (p. 280), but organism lacks axial organellae; 

 in Cyclops and alimentary canal of ruminants and horse. 



C. cyclopis W. In body-cavity of Cyclops sp. 



C. frontalis Braune (Fig. 124, d). 12 flagella; about 12ju long; 

 flagella 30// long; in cattle, sheep and goats. 



C. equi Hsiung (Fig. 124, e). 12-15 flagella; 12-18/z by 7-10^; 

 nucleus central; in caecum and colon of horse. 



Family 5 Polymastigidae Biitschli 



With axial structures; without undulating membrane; flagella 

 variable in number. 



Genus Polymastix BiitschH. Pyriform; 4 flagella arise from 2 

 blepharoplasts located at anterior end; cytostome and axostyle 

 inconspicuously present; ectoplasm covered by longitudinal 

 ridges; endocommensal in insects. 



P. melolonthae (Grassi) (Fig. 124,/). 5-22ju long; in hindgut of 

 Melolontha, Oryctes, Cetonia, Rhizotrogus, Tipula, etc. 



Genus Eutrichomastix Kofoid et Swezy (Trichomastix Bloch- 

 mann). Pyriform; anterior end rounded; cytostome and nucleus 

 anterior; 3 flagella of equal length arise from anterior end, the 

 fourth traihng; axostyle projects beyond posterior end of body; 

 all endocommensal. 



E. serpentis (Dobell) (Fig. 124, g). About 10-25/^ long; in in- 

 testine of snakes; Pituophis, Eutaenia, and Python. 



E. batrachorum (Dobell) (Fig. 124, h). Ovoid; 6-20// long; in 

 intestine of Rana fusca. 



E. axostylis Kirby (Fig. 124, i). Elongate, ellipsoid, or pyri- 

 form; axostyle projecting; 5-10. 5ju by 2-3. 5^; 3 anterior flagella 

 5-10m long; in gut of Nasutitermes kirhyi. 



