Ciliophora 395 



E F 



Fig. 7. 37. A. Diplodinium moy^ocanthum Dogiel, x480 (after Kofoid and 

 Chiistenson). B. Ostracodinium cUpeolum , x250 (after Kofoid and MacLen- 

 nan). C. Tetratoxum unifasciculatum (Fiorcntlni) Gassovsky, x222 (after 

 Hsiung). D. Eremoplastron bovis (Dogiel) Kofoid and MacLennan, x375 

 (after K. & MacL.). E. Polyplastron multh'csicnlatum, skeletal plates indi- 

 cated in solid black, x250 (after MacLennan). F. Metadiniiiiu, medium 

 Awerinzew and Mutafowa, x200 (after MacLennan). G. Ditoxunt funinu- 

 cleum Gassovsky, x202 (after Hsiung). H. Elytroplastron bubali (Dogiel) 

 Kofoid and MacLennan, x250 (after K. & MacL.). 



scolecidae with not more than one "dorsal" band of membranelles in 

 addition to the adoral zone; and the Cycloposthiidae, which have added 

 one or more posterior or caudal groups to the maximum for Ophryo- 

 scolecidae. The Ophryoscolecidae are rumen-dwelling ciliates charac- 

 teristic of cattle, sheep, and related hosts. Cycloposthiidae have been 

 reported mostly from horses, but a few species are known from the 

 chimpanzee, gorilla, rhinoceros, and elephant. Genera assigned to the two 

 families are listed below. 



Family 1. Ophryoscolecidae. Amphacanthus Dogiel, Caloscolex Dogiel (50), Cunhaia 

 Hasselmann (50), Diplodinium Schuberg (50, 120, 176; Fig. 7. 36, R), Diploplastron 

 Kofoid and MacLennan (120), Elytroplastron Kofoid and MacLennan (120), Enopla- 

 stron Kofoid and MacLennan (120), Entodinium Stein (50, 117, 119; Fig. 7. 36, P), Eodi- 

 nium Kofoid and MacLennan (120; Fig. 7. 36, N), Epidinium Crawley (50, 117, 121; 

 Fig. 7. 36, Q), Epiplastron Kofoid and MacLennan (121), Eremoplastron Kofoid and 

 MacLennan (120; Fig. 7. 37, D), Eudiploditiiutn Dogiel (120; Fig. 7. 36, M), Metadinium 

 Awerinzew and Mutafowa (120, 143; Fig. 7. 37, F), Ophryoscolex Stein (50, 121, 143; 

 Fig. 7. 36, O), Opisthotrichum Buisson (50), Ostracodinium Dogiel (117, 120; Fig. 7. 

 37, B), Polyplastron Dogiel (120, 143; Fig. 7. 37, E). 



