THE WHEEL ANIMALCULES (ROTATORIA) 6oi 



72 (71) One eye Notops Hudson. 



Slight indication of lorica sometimes. Several species. 



Representative species (Fig. 909). . . Notops brachionus Ehrenberg. 



(Fig. 912) N. davulatus Ehrenberg. 



(Fig. 910) N. pelagicus Jennings. 



73 (65) Lorica present. 74 



74 (81) No foot 7 



75 (76) Lorica of two convex plates, placed together at their edges. 



Family ANAPODIDAE. 



Lorica ovoid or oval. 



Only one genus Anapus Bergendal. 



One or two species. 



Representative species (Fig. 911) A napus ovalis Bergendal. 



76 (75) Lorica of a convex dorsal and a flat ventral plate, or sometimes 



irregular Family ANURAEIDAE . . 77 



Open in front for head and behind for cloaca; usually armed with spines or teeth. 



77 (80) Spines or teeth at the anterior or posterior edges of the lorica, or 

 none '.-..' 78 



78 (79) Lorica not longitudinally striated Anura'ea Ehrenberg. 



Representative species (Fig. 913, A and B). Anuraea coMearis Gosse. 

 Many species. Lorica of convex dorsal and flat ventral plate. 



(Fig. 913, C) A. brevispina Gosse. 



