INDEX 



417 



Cuyama formation, 4, 5, 153 



Cyclopidius, 10, 18, 20, 21, 23, opp. 24, 25, 30, 31, 54, 

 83, 183, 224, 234, 235, 241-242, 256, 257, 258; brain 

 cast, 266, 267; meas., 291; skel., opp. 24 



brevijacies = I C. simus, 15, 18, 242, 245, 251-252; 



fig'd, 251; meas., 291 

 californicus, 5, 10, 13, 18, 242-243, 255, 256; fig'd, 



385; meas., 291 

 decedens = ? C. simus, 15, 18, 242, 252, 25 5; fig'd, 



387; meas., 252 

 densus, 5, 10, 15, 17, 18, 242, 243-246, 252, 254; 

 fig'd, 244, 245, 409; meas., 291; skel., 245, 409 

 emydinus — \ C. simus, 15, 18, 242, 249, 252-254, 



258; fig'd, 253, 254; meas., 291 

 feliceps = C. simus, 15, 18, 254; fig'd, 387 

 heterodon — \ C. simus, 15, 18, 242, 249, 254-255; 



fig'd, 387; meas., 255 

 incisivus= ? C. simus, 15, 18, 242, 249, 254, 255; 



fig'd, 387; meas., 291 

 lullianus, 5, 10, 17, 18, 242, 243, 244, 245, 246- 



249, 254; fig'd, 247, 248; meas., 291 

 simus, 5, 10, 15, 18, 241, 242, 243, 249-250, 251, 



252, 253, 254, 255; fig'd, 385, 387; meas., 291 

 sp., 10,13 

 Cypress Hills, Canada, 14, 55 

 Cypress Hills formation, 1, 4, 5, 7, 5 5 



dakotensis (Agriochoerus antiquus), 26 



decedens (Cyclopidius) = ? C. simus, 15, 18, 242, 252, 



25 5; fig'd, 387; meas., 252 



(Pithecistes) = ? Cyclopidius simus, 249, 252 

 decora (Leptauchenia), 5, 10, 13, 15, 16, 19, 234, 235- 



238, 239, 240; fig'd, 28, 381, 407; meas., 291; skel., 



236, 407 

 Deep River formation, 4, 5, 9, 138, 174, 188, 198, 201, 



231, 234, 249, 251, 252, 254, 255 

 delicatus (Merychyus), 5, 10, 16, 19, 216, 225-226, 231; 



fig'd, 225, 375; meas., 290 

 densa (Leptauchenia) = Cyclopidius densus, 243 

 densus (Cyclopidius), 5, 10, 15, 17, 18, 242, 243-246, 



252, 254; fig'd, 244, 245, 409; meas., 291; skel., 245, 



409 

 Desmatockcerus = Promerycochoerus, 18, 104, 106, 121 



curvidens = Promerycochoerus curvidens, 1 1 7 

 Devil's Gate, Wyo., 14, 17 

 Devil's Gulch formation, 6, 209 

 Devil's Gulch, Nebr., 14, 15, 209 

 Dichobune, 24, 32 

 Dickinson, No. Dak., 14, 15, 68 

 dickinsonensis (Eporeodon), 5, 10, 15, 18, 63, 64, 68-69; 



fig'd, 27,68, 319; meas., 281 

 dickinsonensis (Eucrotaphus) = Eporeodon dickinsonensis, 



68 

 Dicotyles, 52, 154 

 Dillon, Mont., 13, 14, 43 

 Diplobune, 24 

 Diplotremus agrestis, 23 

 Divide Creek, Mont., 14, 15, 189, 190 

 Doneghy, J. T., Jr., 237 



Douglass, E., 2, 22, 26, 45, 62, 69, 81, 125, 127, 128, 

 145, 161, 162, 163, 164, 167, 173, 188, 189, 192, 

 196, 200, 201 



Drummond, Mont., 13, 14, 127 



Duchesne River formation, 4, 7, 39 



Duchesne River, Utah, 14, 16, 33, 34 



Eagle Nest Butte, So. Dak., 14, 16, 145, 235 

 Edinger, T., 262 



elegans (Merychyus), 5, 10, 13, 15, 19, 166, 206, 213, 

 216, 217, 218, 222, 224, 225, 226-227, 228, 230, 232, 

 233; fig'd, 373; meas., 290 



paniensis (Merychyus), 5, 10, 1 3, 19, 217, 227-228, 

 232; fig'd, 227, 379; meas., 290; skel., 228 

 elrodi (Merycochcerus) = Pronomotherium elrodi, 164 

 elrodi (Pronomotherium), 5, 11, 13, 20, 161, 164-165; 



fig'd, 164, 359; meas., 286 

 emydinus (Cyclopidius) = ? C. simus, 15, 18, 242, 249, 



252-254, 258; fig'd, 253, 254; meas., 291 

 Endocranial casts, 259-268; fig'd, 263-266, 411 

 Environment, 7-9, 24-25, 271-275 

 Eocene (upper), 2, 23, 24, 25, 31 

 Duchesne River, 4, 7, 39 

 Swift Current, 1, 4, 39, 40 

 Uinta, 1, 4, 7, 33, 34, 35, 37, 39, 40, 41, 42 

 Eo??ieryx r= Protoreodon, 18, 26, 31, 33, 37 



pwnilus = Protoreodon pumilus, 37 

 Eporeodon, 10, 18, opp. 24, 25, 26, 27, 28, 29, 30, 31, 

 44, 45, 55, 62-64, 97, 98, 99, 100, 101, 104, 117, 

 118, 119, 123, 128, 144, 145, 173, 178, 179, 181, 

 187, 194, 195, 196, 200, 224, 231, 232, 243, 273, 

 275; brain cast, 263, 265, 266, 267; meas., 265, 281- 

 282; skel., opp. 24, 63 



bullatus, 5, 10, 15, 16, 18, 26, 54, 63, 64, 65-66, 



75, 81 ; fig'd, 29, 65, 66; meas., 281 

 condoni, 5, 10, 15, 16, 18, 63, 64, 66-68; fig'd, 67; 



meas., 281 

 dickinsonensis, 5, 10, 15, 18, 63, 64, 68-69; fig'd, 



27, 68, 319; meas., 281 

 helena:, 5, 10, 13, 16, 18, 63, 64, 69-70; fig'd, 319; 



meas., 281 

 leptacanthus, 5, 10, 16, 18, 63, 64, 70-71, 72, 73, 



74; fig'd, 317; meas., 281 

 longifrons, 5, 10, 15, 16, 63, 64, 71-72, 73, 77; 

 fig'd, 321; meas., 281 



perbuUatus, 5, 10, 16, 18, 63, 64, 72-74; fig'd, 

 73; meas., 281 

 major, 5, 10, 15, 16, 17, 18, 63, 64, 65, 69, 70, 

 74-75, 77, 78, 81, 83, 198; fig'd, 29, 323; meas., 

 281 



cedrensis, 5, 10, 13, 18, 64, 75-76, 79; fig'd, 



321; meas., 281; skel., 75 

 cheeki, 5, 10, 17, 64, 76-77; fig'd, 325, 389; 



meas., 281; skel., 77, 389 

 hybridus, 5, 10, 13, 15, 16, 64, 77-78; fig'd, 

 78; meas., 282 

 major longifrons = E. longifrons, 71 

 major relictus, 5, 10, 16, 18, 63, 64, 76, 78-79, 81; 



fig'd, 79, 323; meas., 282; skel., 79 

 montanus, 5, 10, 13, 15, 18, 63, 64, 79, 80-81, 123; 

 fig'd, 80, 329; meas., 282 



