PAGE 



Gap Creek section, Tennessee, Upper Cambrian locality 126a 401 



Georgia, Vermont, Lower Cambrian locality 25 316 



gilberti, see Mesonacis. 



glabra, see Asaphisais (Blainia). 



Goniodiscus lobatus (Hall), listed 317 



Grand Canyon of Colorado River, Arizona, Middle Cambrian localities 



74, 74e . 374 



gra)iulatns, see Asapliiscus. 



Greenback, Tennessee, Middle Cambrian locality 56y 395 



Greeneville, Tennessee, Upper Cambrian locality 117b 400 



gregarius, see Asaphisais (Blainia). 



Gronwall, Dr. Karl A., acknowledgments 312 



cited on Coryiicxochus 311, 312 



cited 323 



Half Moon Gulch, Nevada, type locality of Chisholm shales 409 



Half Moon Pass, Big Snowy Mountains, Montana, Middle Cambrian 



locality 542 385 



Hall, Dr. James, cited 404 



Harlan Knob, Tennessee, Middle Cambrian locality 9 337 



Hastings Cove, New Brunswick, Middle Cambrian locality 361 



haydeni, see Bathyuriscus. 



Helcionclla rugosa (Hall), listed 321 



Holm, Prof. Gerhard, acknowledgments 312 



quoted 3^3 



House Range, Utah, Middle Cambrian localities 3x, iiq, 30g 403 



Middle Cambrian localities 3s, 3!, 8g, 4, 15b, loy, loz.... 390 



locality no 354 



localities 30 1, 3oy 374 



locality 3ir 402 



Upper Cambrian locality 14V 389 



locality 3011 386, 389 



locality 30 o 389, 391 



Honsia, new subgenus, described 374 



compared with Dolichometopus 374 



genotype, Dolichometopus (Housia) varro Walcott 374 



see Dolichometopus. 



Howell formation, Utah, Middle Cambrian localities 3of, 31s 371 



howelli, see Bathyuriscus. 



Hyolithellus micans (Billings), listed 317, 321 



Hyolithellus micans rtigosa Walcott, listed , 317 



Hyolithes, associated with Asaphiscus (Blainia) glabra 394 



listed 374 



a)nericanus Billings, listed 317 



attenuatus Walcott, listed 409 



billingsi Walcott, listed 321, 353, 409 



communis Billings, associated with Coryiie.vochtis (Bonnia) parvu- 



liis 329 



listed 317, 321 



15 



