482 INDEX 



Blountia — Continued. page 



anser, new species, described 399 



figured, pi. 61, figs. 7, Ja-b 445 



characterized 397 



compared with Blountia mintula and B. alethes 399 



related to Blountia alexas 398 



mimula, new species, described 399 



figured, pi. 61, figs. 4, ^a-c 444 



characterized 397 



compared with Blountia alethes 397 



Blountia anser 399 



genotype 396 



Blue-green Algae (Cyanophyceas), fossil algae allied to 79 



compared with Greysonia 109 



depositions by similar algae 100 



habitat discussed 92 



resemblance to Camasia spongiosa loi, 115 



Weedia 107 



Blue-green algae cells {Schizothrix f ). figured, pi. 20, figs. 7, 8, 8a 150 



compared with Camasia spongiosa 103 



discussed 100 



Blue-green algae deposits, compared with Algonkian 100 



boccar, see Dolichometopus. 



bohemica, see Acrothele. 



Bolbocephalus Whitfield? {^Dolichometopus {?) convexus BilHngs)... 359 

 = Dolichometopus ( f) rarus Billings 359 



Bonne Bay, Newfoundland, Lower Cambrian locality 41 1 323 



Bonnia, new subgenus of Corynexochus, described 325 



characterized 309 



compared with Dorypyge 326 



genotype, Bathyurus parvulus Billings 325 



related to Bathyuriscus 2>2>i 



species referred to, listed 326 



subgenus of Corynexochus 309 



see Corynexochus. 



bootes, see Pagetia. 



Bornemann, J. G., description of algal form iii 



Bornemannia Walcott, synonymic reference 330 



prima Walcott, synonymic reference 352 



footnote 332 



Bornholm Island, Denmark, Middle Cambrian locality 314, 324 



Dorypyge abundant 59 



bornholmiensis, see Corynexochus. 



Borregaard, Bornholm Island, Denmark, Middle Cambrian locality 314 



bosworthi, see Albert ella. 



Botsfordia ccelata (Hall), listed 316, 321, 322 



Bow River Valley, section described 282 



unconformity, Walcott discussion 284 



and Belt Mountains sections, compared 284 



