936 Report oF THE STATE GEOLOGIST. 
. 
Family TrresratEeLiip®, King. 
Terebratella, d’Orbigny, 1847. Ornithella, Deslongchamps, 1884. 
Waltonia, Davidson, 1850. Eudesia, King, 1850. 
Terebratalia, Beecher, 1893. Flabellothyris, | Deslongchamps, 
Laqueus, Dall, 1870. 1884. 
Frenula, Dall, 1871. (?) Orthotoma, Quenstedt, 1871. 
Trigonosemus, Kcenig, 1825. Aulacothyris, Douvillé, 1880. 
Kingena, Davidson, 1852. (?) Epicyrta, Deslongchamps, 1884, 
Lyra, Cumberland, 1816. (?) Plesiothyris, Douvillé, 1880. 
Terebrirostra, d’Orbigny, 1847. (?) Camerothyris, Bittner, 1890. 
Magellania, Bayle, 1880. (?) Orthoidea, Frirer, 1875. 
Waldheimia, King, 1850. Dallina, Beecher, 1893. 
Neothyris, Douville, 1880. Ismenia, King, 1850. 
Macandrevia, King, 1859. Magasella, Dall, 1870. 
Zeilleria, Bayle, 1878. Tropidoleptus, Hall, 1857. 
Fimbriothyris, Deslongchamps, 1884. | Platidia, Costa, 1852. 
Antiptychina, Zittel, 1883. Morrisia, Davidson. 1852. 
Microthyris, Deslongchamps, 1884, 
Family Macasip#, d’Orbigny. 
Magas, Sowerby, 1816. Rhychora, Dalman, 1828. 
Bouchardia, Davidson, 1849. Rhynchorina, (Ehlert, 1887. 
Miuhlfeldtia, Bayle, 1880. Mannia, Dewalque, 1874. 
Megerlia, King, 1850. 
Family StrincocerHatms, Dall. 
Stringocephalus, Defrance, 1827. 
Family Mecatuyrw, (Ehlert. 
Megathyris, d@’Orbigny, 1847. Zellania, Moore, 1854. - 
Argiope, Deslongchamps, 1842. Gwynia, King, 1859. 
Cistella, Gray, 1850. 
Sub-order HELICOPEGMATA or SPIRIFERACEA, 
Waagen. 
Family Arrypip#, Dall. 
Hallina, N. H. Winchell and Schu- | Catazyga, Hall, 1893. 
chert, 1892. Glassia, Davidson, 1882. 
Protozyga, Hall, 1893. Atrypina, Hall, 1893. 
(?)Cyclospira, Hall, 1893. (?) Clintonella, Hall, 1893. 
Zygospira, Hall, 1862. Atrypa, Dalman, 1828, 
Anazyga, Davidson, 1882. Karpinskia, Tschernyschew, 1885. 
Orthonomea, Hall, 1858. Gruenewaldtia, Tschernyschew, 1885, 
Family Sprrirerinipx, Davidson. 
Cyrtina, Davidson, 1858. Cyrtotheca, Bittner, 1890. 
Bittnerula, gen. nov. Spiriferina, d’Orbigny, 1847. 
Thecocyrtella, Bittner, 1892. Suessia, Deslongchamps, 1854, 
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