732 



INDEX. 



Page 

 Bassler, Ray S., and Edward O. Ulrich, New 

 American Paleozoic Ostracoda. Prelimi- 

 nary Revision of the Beyrichiid.: . with De- 

 scriptions of New Genera 277 



Bassler, Ray S. The Formation of Geodes 

 with Remarks on the Silicificat ion of Fossils . 133 



Bathmedonia 593 



Bathmocercus 593 



Bathygnathia 483 



cnrvirostris 483 



Battus tuberculatus 283, 28G 



Beds of Montana. Description of New Fossil 

 Liverwort from the Fort Union, by F. II. 



Knowlton 157 



Bergia 593 



Berlepschia 593 



chrysoblephara 593 



Bernicla 593 



Betula pumila 419 



Beyrichia 277, 278, 284, 306, 308, 317, 324 



acuta 295, 296 



admixta 285 



aequilatera 285 



afflnis 306 



antiqua 295, 296 



aurita 286 



barretti 301 



baueri 285, 290 



tripartita 285 



beyrichioides 295 



bohemica 306 



bolliana 285, 287 



umbonata 286 



bronni 281, 285. 289 



buchiana 285, 287, 288, 292, 293 



angustata 285 



incisa 285 



nutans 285 



buchiano-tuberculata 289 



bussacensis 306 



carinata 306 



chambersi 278, 308 



ciliata 278, 309, 310 



clavata 281 , 285, 291 , 294, 299, 300 



clavigera 281 



complicata 278, 300 



var. decorata 306 



concinna 301 



damesi 285, 299 



drckerensis 301 



devonica 286 



diffusa 285 



digitata var. separata 306 



dissecta 306 



dubia 285 



duryi 310 



emaciata 316 



erratica 295, 296, 306 



fastigata 324 



grandis ., 215 



granulifera 294, '2W. :;i 



granulosa 285, 293 



guilleri 310 



ball] :uo 



hammelli 310 



harpa 306 



Page. 



Beyrichia hastata 308 



initialis 301 



intermedia 301 



interrupta 285,294 



jonesi 291, 299 



jonesii 285,293 



kloedeni 277, 



283, 285, 287, 289, 290, 291, 292, 293 



acadica 285 



antiquata 285 



bicuspis 285 



granulata 285 



infecta 285 



intermedia 285 



subvar. sub- 



spissa 285 



nuda 285 



protuberans 285 



var. scotica 302 



subtorosa 285 



torosa 285 



verruculosa 285 



kochii 281. 285,287 



kohnodini 294 



kurnmeli 301 



laculata 306 



lata 285,292 



lauensis 285, 289 



lindstromi 285. 287 



var. expansa 286 



linnarssoni 293, 295, 296, 297, 298, 299 



longispina 316 



lyoni 314 



maccoyiana 281 , 285, 286, 287, 298 



sulcata 285 



mamillosa 306 



marchica ' 306 



var. angustata 306 



lata 306 



montaguensis 301 



moodeyi 285, 286, 287 



muldensis 285 



multiloba 321 



nearpassi 301 



nodulosa 285 



expansa 286 



noetlingi 286, 289, 290 



conjuncta 286 



oculina 301 



palmata 306 



parallela 319 



parasit ica 301 



persulcata 288 



plagosa 286 



plicata 286,293 



protuberans 291 



pust ulosa 286, 289 



quadriflda 308 



quadrilirata 307 



radians 307 



radiata 316, 320 



reticulata 28fi 



reuleri 286,293 



ribeiriana 307 



richardsoni 278, 312 



salteriana 281, 286, 289, 293, 298, 299 



