GAST^EROl^ODA. 



163 



pernodosus, Meek & Worthen, 1870, Proc. 



Acad. Nat. Sci. Phil., Coal iVIeas. [Sig. 



very nodose.] 

 planidorsatus. Meek & Worthen, 1860, 

 (Euomphalus planidorsatus) Proc. 



Acad. Nat. Sci. Phil., Chester Gr. [Sig. 



flat-backed.] 

 planispira, Hall, 1858, (Euomphalus 



planispira) Trans. Alb. Inst., vol. 4, 



Warsaw Gr. [Sig. having a flat spire.] 

 primordialis, Winchell, ]8(k, Am. Jour. 



Sci. <fe Arts, 2nd series, vol. 37, Pots- 

 dam Gr. [Sig. first in order.] 

 quadrivolvis. Hall, 1858, (Euomphalus 



quadrivolvis) Trans. Alb. Inst., vol. 4, 



Warsaw Gr. [Sig. having four volu- 

 tions.] 

 similis. Meek & Worthen, 1861, Proc. 



Acad. Nat. Sci. Phil., St. Louis Gr. 



[Sig. similar.] 

 similis var. planus. Meek & Worthen, 



1861, Proc. Acad. Nat. Sci. Phil., St. 



Louis Gr. [Sig. level, flat.] 

 spergenensis. Hall, 1858, (Euomphalus 



spergenensis) Trans. Alb. Inst., vol. 



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

 spergenensis var. planorbiformis. Hall, 



1858, (Euomphalus spergenensis var. 



planorbiformis) Trans. Alb. Inst., vol. 



4, Warsaw Gr. [Sig. like a shell of 



the genus Planorbis. 

 subquadratus. Meek & Worthen, 1870, 



Proc. Acad. Nat. Sci., Coal Meas. [Sig. 



somewhat squared.] 

 subrugosus, Meek & Worthen, 1873, Geo. 



Sur. 111., vol. 5, Coal Meas. [Sig. 



somewhat rugose.] Proposed instead 



of Euomphalus rugosus of Hall, which 



was preoccupied, 

 umbilicatus. Meek & Worthen, 1860, (Eu- 

 omphalus umbilicatus) Proc. Acad. 



Nat. Sci. Phil., Coal Meas. [Ety. 



from the large umbilicus.] 

 valvatiformis, Shumard, 1863, Trans. St. 



Louis Acad. Sci., Calciferous Gr. [Sig. 



like the genus Valvata.] 

 whitneyi. Meek, 1864, Pal. California, 



Coal Meas. [Ety. proper name.] 

 Streptaxis, Gray, 1837, in Mag. Nat. Hist., 



[Ety. stroptes, twisted ; axi^, axis.] 

 whitfieldi, Meek, 1871, Proc. Acad. Nat. 



Sci. Phil., Coal Meas. [Ety. proper 



name.] 

 Strophostylus, Hall, 1859, Pal. N. Y., vol. 3. 



[Ety. strophe, turning round; stylos, 



column.] 

 andrewsi. Hall, 1859, Pal. N. Y., vol. 3, 



Oriskany sandstone. [Ety. proper 



name.] 

 cancellatus, Meek & Worthen, 1868, Geo. 



Sur. 111., vol. 3, Oriskany sandstone. 



[Sig. latticed.] 

 cyclostomus, Hall, 1863, Trans. Alb. Inst, 



vol. 4, Niagara Gr. [Sig. circular- 

 mouthed.] 

 depressus. Hall, 1859, Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. depressed.] 



elegans, Hall, 1859, Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. elegant,] 

 expansus, Conrad, 1841, (Platyceras ex- 



pansus) Ann. Rep. N. Y., Oriskany 



sandstone. [Sig. spread out,] 

 fitchi. Hall, 1859, Pal. N. Y., vol. 3, Low. 



Held. Gr. [Ety. proper name.] 

 globosus, Hall, 1859, Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. globular.] 

 matheri. Hall, 1859, Pal. N. Y., vol. 3, 



Oriskany sandstone. [Ety. proper 



name.] 

 obliquus, Nicholson, 1874, Rep. Pal. Ont., 



Devonian. [Sig. oblique.] 

 obtusus, Hall, 1859, Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. obtuse.] 

 ovatus, Nicholson, 1874, Rep. Pal. Ont., 



Devonian. [Sig. egg-shaped.] 

 rotundatus. Hall, 1859, Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. rounded.] 

 subglobosus, Nicholson, 1874, Rep. Pal. 



Ont., Devonian. [Sig. somewhat 



globose.] 

 transversus. Hall, 1859, Pal. N. Y., vol. 3, 



Oriskany sandstone. [Sig. crosswise.] 

 unicus. Hall, 1862, 15th Reg. Rep., Scho- 

 harie grit. [Sig. single, alone.] 

 varians, Hall, 1876, Illust. Devonian 



Foss., Up. Held. Gr. [Sig. variable.] 

 Stylifer, Broderip, 1829, in Sowerby, Gen. 



Shells. 

 pnmigenia,see Macrocheilus primigenium. 

 SuBULiTEs, (yonrad, 1847, Pal. N. Y., vol. 1. 



[Ety. subuliies, awl-shaped— subulate.] 

 abbreviatus. Hall, 1850, 3rd Reg. Rep., 



Trenton Gr. [Sig. shortened.] 

 brevis, Winchell & Marcy, 1865, Mem. 



Bost. Soc. Nat. Hist., Niagara Gr. 



[Sig. short.] 

 calciferus, Billings, 1859,Can. Nat. & Geo., 



vol. 4, Calciferous Gr. [Ety. from 



the Group.] 

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



Quebec Gr. [Ety. mythological name.] 

 elongatus, Emmons, 1842, Geo. Rep. N. 



Y., Trenton Gr. [Sig. lengthened.] 

 inflatus. Meek & Worthen, 1869, Proc. 



Acad. Nat. Sci. Phil., Cin'ti Gr. [Sig. 



inflated, swollen.] 

 notatus, Billings, 1866, Catal. Sil. Foss. 



Antic, Anticosti Gr. [Sig. marked.] 

 parvulus, Billings, 1862, Pal. Foss., vol. 1, 



Black Riv. Gr. [Sig. very small.] 

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



Quebec Gr. [Ety. mythological name.] 

 richardsoni, Billings, 1857, Rep. of Progr., 



Hud. Riv. Gr. [Ety. proper name.] 

 terebriformis. Hall & Whitfield, 1875, 



Ohio Pal., vol. 2, Niagara Gr. [Sig. 



auger-shaped.] 

 ventricosus, Hall, 1852, Pal. N. Y., vol. 2, 



Niagara and Guelph Gr. [Sig. bulg- 

 ing out.] 



Trachydomia, Meek & Worthen, 1866, Geo. 

 Sur. III., vol. 2. [Ety. trachys, rough ; 

 doma, a house.] 



