244 ILLINOIS BIOLOGICAL MONOGRAPHS [454 



EXPLANATION OF PLATE 



Figs. 256, 257, 258, 259. Steinina harpali Watson. Sporont, X 245; early stage 

 of epimerite development, X 245 ; middle stage of epimerite devel- 

 opment, X 24s ; late stage in development, X 245. 



Figs. 260, 261. Gregarina udeopsyllae Watson. An association of sporonts, X 74', 

 protomerite, X 245. 



Figs. 262, 263, 264. Gregarina platyni Watson. An association, X 245 ; an asso- 

 ciation, X 74; epimerite of a young individual, X 245. 



Figs. 265, 266, 267, 268. Hirmocystis harpali Watson. Association of four spo- 

 ronts, X 74; association of three sporonts, X 74; association of two 

 sporonts, X 74; young individual, with epimerite, X 245. 



Fig. 269. Steinina harpali Watson. A sporont, X 245. 



Figs. 270, 272. Echinomera hispida (Schneider) Labbe. A protomerite, X 245; 

 sporont, X 245. 



Fig. 271. Gregarina rigida (Hall) Ellis. An association, X 60. 



Figs. 273, 274. Hirmocystis harpali Watson. Protomerite, X 245 ; linking device 

 between primite and satellite, X 245. 



