158 HANDBOOK OF PROTOZOOLOGY 



stretched between the blepharoplast and a point on the side 

 of body. With a stout axostyle. 



Paradevescovina nana Kirby (Fig. 59, b). In the termite, 

 Kalotermes hermsi. Body length 10 to 15 microns. 



Genus Metadevescovina Light. Body spindle to elongated 

 oval in form; circular in cross-section. Body surface smooth, 

 but often with attached bacteria. Nucleus anterior. Axostyle 

 not protruding beyond the posterior end of body. The parabasal 

 body is a spiral rod around the axostyle. Three sets of flagella. 

 A single primary flagellum, three long secondary flagella and 

 several tertiary flagella, all of which emerge from the region 

 anterior to the nucleus. Feeding on bits of wood. 



Metadevescovina dehilis Light (Fig. 59, c). In the intestine 

 of the termite, Kalotermes hubbardi. Body 35 to 40 microns long. 



Genus Foaina Janicki. Body ellipsoidal; rigid axostyle pro- 

 trudes a little. Flagella similar to those of Devescovina in num- 

 ber and appearance. Blepharoplast is somewhat back of the 

 anterior tip. Parabasal body is composed of two curved rods. 



Foaina gracilis Janicki (Fig. 59, d). In the gut of termites. 

 Body about 25 to 30 microns long. 



Genus Dinenympha Leidy. Four to eight posterior flagella 

 arranged in spiral form. Axostyle free at the posterior end. 



Dinenympha jimbriata Kirby (Fig. 59, e). In the intestine 

 of the termite, Reticulotermes hesperus. Body 60 to 70 microns 

 long. 



Genus Pyrsonympha Leidy. Body ovoid; plastic. Axostyle 

 is divided into two parts at its posterior margin and the whole 

 vibrates in life. 4 to 8 posterior flagella. Several species in 

 termites. 



Pyrsonympha vertens Leidy. In Termes flavipes. 



Genus Monocercomonas Grassi. Body small. Four flagella 

 inserted in pairs in two places. Two flagella directed anteriorly, 

 and two posteriorly. Axostyle filamentous. 



Monocercomonas bufonis Dobell (Fig. 59,/). In frogs and 

 toads. Body small, about 13 microns long. 



Group 3 



Genus Eutrichomastix Kofoid and Swezy ( = Trichomastix 

 Blochmann). Body pyriform; anterior end rounded. Cyto- 



