PROTISTA. 



elegantulus, Billings, 1865, Pal. Foss., vol. 



1, Calcif. Gr. [Sig. elegant.] 

 formosus, Meek & Worthen, 1870, Proc. 

 Acad. Nat. Sei., Niagara Gr. [Sig. 

 beautiful.] 

 fungosus, Hall, 1861, Geo. Rep. Wfs., 



Galena Gr. [Sig. spongy.] 

 globularis, Hall, 1861, Supp. Geo. Rep. 



Wis., Galena Gr. [Sig. globular.] 

 heinisphericus, Hall, 1861, Geo. Rep. Wis. 



Niagara Gr. [Sig. hemispherical.] 

 infundibulus, Hall, 1861, Geo. Rep. Wis., 



Niagara Gr. [Sig. a funnel.] 

 insularis, Billings, 1866, Catal. Sil. Foss. 



Antic, Antiuosti Gr. [Sig. upon an 



island.] 

 iowensis, Owen, 1852, (Selenoides iowen- 



sis) Geo. Rep. Wis., Iowa and Minn. 



[Ety. proper name.] 

 jonesi, Billings, 1865, Pal. Foss., vol. 1, 



Low. Held. Gr. [Ety. proper name.] 

 neptuni, De France, 1827, Diet, des Sci. 



Nat., vol. 45, Trenton Gr. [Ety. 



proper name.] 

 occidentalis, Salter, 1859, Can. Org. Rem. 



Decade 1, Trenton Gr. [Sig. Western.] 

 ohioensis, Hall & Whitfield, 1875, Ohio 



Pal., vol. 2, Niagara Gr. [Ety proper 



name.] 

 oweni, Hall, 1861, Geo. Rep. Wis., Galena 



Gr. [Ety. proper name.] 

 reticulatus, Owen, 1840, (Orbituloides 



reticulata) Rep. on Min. lands, Niagara 



Gr. [Sig. reticulated.] 

 subturbinatus, Hall, 1863, Trans. Alb. 



Inst., vol. 4, Niagara Gr. [Sig. some- 

 what top-shaped.] 

 sulcatus, Owen, 1844. This name was pre- 

 occupied and the species is now named 



R. oweni. 

 Rhabdakia, Billings, 1865, Pal. Foss., vol. 1. 



[Ety. rhabdos, a rod.] 

 fragilis, Billings, 1865, Pal. Foss., vol. 1, 



Calcif. Gr. [Sig. frail, brittle.] 

 furcata, Billings, 1865, Pal. Foss., vol. 1, 



Calcif. Gr. [Sig. forked.] 



Ribeiria, Sharpe, 1853, Jour. Geo. Soc, vol. 

 9. [Ety. proper name (?).] 

 (?) calcifera, Billings, 1865, Pal. Foss., 

 vol. 1, Calcif. Gr. [Ety. from the Cal- 

 cif erous Group.] 

 (?) longiuscula, Billings, 1865, Pal. Foss., 

 vol. 1, Calcif. Gr. [Sig. somewhat the 

 longest.] 

 Rotalia, Lamarck, 1804, Ann. Mus. [Ety. 

 rota, a wheel.] 

 baileyi, Hall, 1858, Trans. Alb. Inst., vol. 

 4, Warsaw Gr. [Ety. proper name.] 

 Scyphia, Oken, 1815, Lehrb. Naturg. 

 digitata, see Brachiospongia digitata. 

 stellata, Troost, 1840. Not clearly defined. 

 Selenoides, Owen, 1852. Syn. for Receptacu- 

 lites. 

 iowensis, Owen, 1852, see Receptaculites 

 iowensis. 

 Siplwnia, Parkinson, 1820, Organ. Rem. 

 cratera, see Palaeomanon cratera. 

 imbricato-articulata, see Astylospongia im- 



bricato-articulata. 

 prsemorsa, see Astylospongia praemorsa. 

 Splienopoterium, Meek & Worthen, 1866. A 

 Syn. for Palaeacis. 

 coinpressum, see Palaeacis compressus. 

 cuneatum, see Palaeacis cuneatus. 

 erwrme, see Palaeacis enormis. 

 enorme var. depressum, see Palaeacis enormis 



var. depressus. 

 obtusum, see Palaeacis obtusus. 

 Spongia, Linnaeus, 1789, Systema Naturae. 



inciso-lobata, see Astylospongia inciso- 

 lobata. 

 dellatim-sulcata, see Astylospongia stel- 

 latim-sulcata. 

 Trachyum, Billings, 1865, Pal. Foss., vol. 1. 

 [Ety. trachus, rough, rugged.] 

 cyathiforme, Billings, 1865, Pal. Foss., 

 vol. 1, Quebec Gr. [Sig. cup-shaped.] 

 rugosum, Billings, 1865, Pal. Foss., vol. 1, 

 Quebec Gr. [Sig. wrinkled.] 

 Triciiospongia, Billings, 1865, Pal. Foss., 

 vol. 1. [Ety. trichias, to show hairs ; 

 spongia, a sponge.] 

 sericea, Billings, 1865, Pal. Foss., vol. 1, 

 Calcif erous Gr. [Sig. silky.] 



