xq vr 6 n u s. 



V, INFUSORIA, Simple microfcopic animalcules. 



A. With external organs, 



1 04. Brachionus, Body covered with a fhell and ciliate at the tip, 



J05. Vorticella. Body naked and ciliate at the tip. 



j 06. Tricheda. Body hairy on one fide. 



107. Cercaria. Body rounded and furnimed with a tail. 



114. Leuc opera. Body every where ciliate. 



B. Without external organs, flattened. 



109. Gonium. Body angular, 



no. Colpoda. Body finuate. 



ill. Paramecium. Body oblong. 



112. Cychdium. Body orbicular or ovate, 



C* Without external organs, round'; 



108. Bur/aria. Body hollow like a purfe, 



113. Vibrio. Body elongated, 

 no. Enchelis. Body cylindraceous. 



115. Badllaria. Body compofed of flraight draw-like fila- 



ments, varying in pofition. 



117. Volvox. Body fphaerical. 



118. Mopes* Body a mere point. 



