450 



Index. 



Copiocera, 64 

 Collections in Carnegie Museum, 



value, etc., 233 

 Colpolopha obsoleta, 38 

 columbianum, Pisidium, 426, 438 

 columbK, Stenacris, 49 

 comprossidens. Toxodon, 221 

 compressum, Pisidium, 425 

 Compsacris pulcher, 31 

 compta, Chirista, 99 

 comptus, Stenobothrus, 100 

 congrua, Omura, 36 

 Coniferales, 285 

 Conocephalidse. 121 

 conocephalus, Xiphidion, 124 

 continuum, Xiphidion, 123 

 contortum, Pisidium, 425 

 cooki, Procellaria. 353, 360, 363, 365 

 Coptacra anguliflava, 108 

 cordifoliun), Viburnum Lesquereuxii, 



var, 291 

 Corythucha, 269 

 Copiocera austera, 65, 67. 68 



boliviana, sp. nov., 65, 66, 67 



collaris, 64 



erythrogaster, 64 



eucera, 64 



formosa, sp. nov., 65, 66 



hffimatonata, 64 



Iseta, 64 



lepida, 65, 66, 67 



nigricans, 64 



prasina, 65, 66 



specularis, 65 



surinamensis, 64, 65 



Synopsis of the Species of, 64 

 Coptacra succinea, 107 

 corallipes, Bucephalacris, "^2 

 Cornops bivittatum, 60 



ignotum, 61 



insulare, 60, 61 . 



longipenne. 60, 61 



Paraguay ense, 61 



pelagicum, sp. nov., 61 

 corumbse, Amblytropidia, 29, 30 

 Coryacris angustipennis, 38 

 Corycomima flavescens, 136 

 Corycus abruptus, 129 



greeffi, 130 



intermedius, 129 



jourinei, 129 



karschi, 129 



kraussi, 129, 130 



paradoxus, 130 



prremorsus, 129 



siccifolium, 130 



Synopsis of the Species of, 129 

 Cosmoderus, 120 

 costalis, Tettigidea, 14 

 costata. Amblema, 151 



eriganensis, Symphynota, 151 



Symphynota, 151 



(Lasmigona), 149 

 Cotys antennatus, 7 

 crassum, Brachyphyllum, 285 

 crassus, Unio, 147 

 creatopus, Puffinus, 355 

 Credneria, 307. 317 

 cretacea, Pyrus, 311 

 cretaceum, Celastrophyllum, 313 



Sassafras, 301, 303 

 Crimisus patruus, 9 

 Criotettix. 94 



nigellus, 95 

 cruentata, Zoniopoda. 39 

 cubensis, Chortophaga, 34 

 Curie. Madam Marie : visit to Pitts- 

 burgh, 234 

 curvatum, Pisidium. 427 

 cyaneus, Stenocrobylus. 116 

 cyanipes, Scyllina, 33 

 cyanoptera, Xiphiola, T] 

 cylindrodes, Stenacris, 48 

 Cymatomera argillata, 125 

 Cyphoceraslis clavareaui, 108 



hopei n. sp., 108. no 



Key for Separating the Species 

 of, 108 



L-eta. 108 



picturata n. sp., loS, 109 



tristis, 108 

 (Cyrenastrum), 438 

 Cyrtacanthacridse. 36, 104 

 Cyrtacanthacris lineata, 106 



ruficornis. 106 

 Cyrtoxipha ciliata, 141 



furva, 141 



Dakota Formation : Brief Historic 

 Notes Relating to Studies, 

 275-278. 

 Deposition and Present Distribu- 

 tion, 278-280 

 Correlation of, 280 

 Location in the Cretaceous ana 

 correlation with other forma- 

 tions, 281-284 

 Relation to the Raritan, Amboy, 

 Woodbine, Tuscaloosa, and 

 ,.^ Washita of the Atlantic and 



