PLATE XXIII. 



Fig. 164. Uroleptus ratttihis, x 120, - 



Fig. 165. Uroleptus agilis, x 200, 



Fig. 166. Histrio steinii, x 300, 



Fig. 167. Oxytricha pellioriella, x 440, 



Fig. 168. Oxytricha platy stoma, x 400, 



Fig. 169. Stylonychia mytihis, x 300, 



Fig. 170. Stylonychia sp., x 310, 



98 

 98 



lOI 



100 

 100 



lOI 



102 



