THE WHEEL ANIMALCULES (ROTATORIA) S9S 



33 (40) Lorica of three or four plates. Furrows are one mid-dorsal, two 

 lateral; sometimes one mid-ventral. 



Family Salpinidae . . 34 



34 (35) Lorica with teeth or spines in front, or behind, or both. 



Salpina Ehrenberg. 

 Representative species (Fig. 886). . . Salpina spinigera Ehrenberg. 



35 (34) Lorica without teeth or spines 36 



36 (39) One eye present 37 



37 (38) Lorica not strongly marked, the furrows and plates noticeable only 



on close examination Diaschiza Gosse. 



Representative species (Fig. 887) Diaschiza hvodii Gosse. 



38 (37) Lorica distinct and strong Diplois Gosse. 



Two spedes. 



Representative species (Fig. 888) Diplois daviesiae Gosse. 



39 (36) No eye; lorica distinct Diplax Gosse. 



Representative species (Fig. 889) Diplax videns Levander. 



40 (33) Lorica of two plates. Furrows lateral. Family Euchlanidae. . 41 

 One plate dorsal, the other ventral. 



41 (46) Two toes 4a 



42 (45) The two plates connected by a membrane which folds into the lateral 

 furrow 43 



Small spedes, not spedally dear, lorica often marked in various ways. 



43 (44) Lorica narrower Dislyla Eckstein. 



Many spedes. 



Representative species (Fig. 890) Distyla inermis Brryce. 



Representative species (Fig. 891) D. ohioensis Kernck. 



