THE WHEEL ANIMALCULES (ROTATORLV) 593 



33 (40) Lorica of three or four plates. Furrows arc 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. 



Salphia Ehrcnbcrg. 

 Representative species (Fig. 886). . . Salpina spinigcra Ehrcnbcrg. 



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 Diaschizn Gosse. 



Representative species (Fig. 887) Diaschiza Iwodii Gosse. 



38 (37) Lorica distinct and strong Diplois Gosse. 



Two species. 



Representative species (Fig. 888) Diplois davi^siae Gosse. 



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



Representative species (Fig. 889) Diplax viiiens Lii\'i\n{\{:r. 



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

 One plate dorsal, the other ventral. 



41 (46) Two toes 42 



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



furrow 43 



Small species, not specially clear, lorica often marked in various ways. 



43 (44) Lorica narrower Distyhi Eckstein. 



Many species. 



Representative species (Fig. 800) Distyla imrmis Br>'ce. 



Representative species (Fig. 891) D. ohioaisis Hcrnck. 



