566 INDEX 



Huenella — Continued. page 



tcxana Walcott, Upper Cambrian, compared 520, 522, 526 



described 522 



figured, pi. 120, figs. 4-8 548 



triplicata, new species, Ozarkian 481, 523 



described 526 



figured, pi. 125, figs. 1-15 553 



? weedi, new species, Upper Cambrian, described 522 



figured, pi. 120, figs. 5-8 548 



Hungia: see Hnngaia. 



Hungaia 458, 470 



articauda Walcott 474 



billingsi Walcott 474 



eurekensis Walcott 467 



expectans Walcott 467 



Aacilla Walcott 473, 474 



flagricauda (White) 474, 476 



hamburgensis Walcott 467 



hera Walcott 474 



laxicauda Walcott 474 



Hurdia victoria, figured, pi. 50, fig. 1 251 



Hyalostelia fasciculatus McCoy, compared 276 



Hyolithellus flagellum (Matthew), described 26 



figured, pi. s, figs. 2, ia 54 



hectori Walcott, described 27 



figured, pi. 5, fig- 1 54 



Hyolithes cecrops Walcott, described 27 



figured, pi. S, figs. 3, sa-c 27 



Hystricarns bitubercnlatus (Walcott) 474 



gallus Walcott 474 



sp. undt 474 



tuberculatus (Walcott) 467 



Idahoia licinia 'Walcott 475 



serapio Walcott 475 



sp. undt. (5a) 475 



Internal organs 425 



Irving ella ? undt 473 



Isotelus 118, 121, 122, 139, 150, 151, 159, 163, 166, 385, 386 



appendages 132, 162 



covingtonensis Ulrich ? Mss., described 134 



gigas De Kay, figured, pi. 103, figs. 1, 2. 452 



gigas var. insignis Ulrich, discussed 134 



figured, pi. 24, fig. 2 190 



maximus Locke, appendages 132 



described 133, 429, 430 



figured, pi. 24, figs. 3, 3a; pi. 25, fig. 1 190, 191 



walcotti Ulrich, discussed 134 



figured, pi. 24, fig. 1 190 



from Trenton Falls (footnote) 133 



