1086 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 

 RAFINESQUINA ALTERNATA var. NASUTA Cumings. See Rafinesquina nasuta. 



Rafinesquina alternata ponderosa Ulrich. 



Leptsena alternata Hall (part), Pal. New York, 1, 1847, pi. 31, fig. 11. 

 Rafinesquina alternata var. ponderosa Ulrich in Hayes and Ulrich, U. S. Geol. 

 Surv., Folio 95, illust. sheet, 1903, fig. 20. Cumings, 32d Ann. Rep. Dep. 

 Geol. Nat. Res. Indiana, 1908, p. 929, pi. 37, figs. 3, 3a. 



Maysville (Bellevue): Cincinnati, Ohio, and vicinity; Indiana and Kentucky. 

 nolotype.G&t. No. 35400, U.S.N.M. 



Observation. This shell was known to collectors under the name of "pon- 

 derosa" since 1840, but was not recognized as a distinct form until 1903. 



RAFINESQUINA ALTERNISTRIATA Hall and Clarke. See Rafinesquina alternata alter- 

 nistriata. 



RAFINESQUINA? ATAVA Schuchert. See Eoorthis atava. 



Rafinesquina aurora (Billings). 



Strophomena aurora Billings, Geol. Surv. Canada, Pal. Fossils, 1, 1865, p. 218, 



fig. 202. 



Rafinesquina aurora Schuchert, Bull. U. S. Geol. Surv., 87, 1897, p. 338. 

 Chazyan (Quebec, K-N, P): Point Rich, Table Head, etc., Newfoundland. 



Rafinesquina ceres (Billings). 



Strophomena ceres Billings, Canadian Nat. Geol., 5, 1860, p. 54; Geol. Surv. 



Canada, Pal. Fossils, 1, 1865, p. 119 (adv. sheets, 1862). 

 Rafinesquina Ceres Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, 



p. 120 (loc. occ.). Schuchert, Bull. U. S. Geol. Surv., 87, 1897, p. 338. 

 Richmond: Charleton Point, Anticosti (Charleton); Stony Mountain, Manitoba 



(Stony Mountain). 

 Gamachian (Ellis Bay) : Gamache Bay, Anticosti. 



Rafinesquina chaniplainensis Raymond. 



Rafinesquina champlainensis Raymond, Bull. Amer. Pal., 1902, 3, p. 37, pi. 18, 



fig. 5, 6; Ann. Carnegie Mus., 7, p. 233, figs. 6-9. 

 Chazyan: Crown Point, Valcour Island, Bluff Point, and Chazy, New York; Isle 



La Motte and South Hero, Vermont (Crown Point); East Tennessee (Lenoir). 



Rafinesquina declivis (James). 



Strophomena declivis James, Cincinnati Quart. Jour. Sci., 1, 1874, p. 240. 

 Rafinesquina declivis Foerste, Bull. Sci. Lab. Denison Univ., 16, 1910, p. 43, 



pi. 2, fig. 4; pi. 5, figs. 12a-d; ibid., 17, 1912, p. 127, pi. 8, fig. 10. 

 Trenton (Cynthiana) : Boyds Station, Kentucky. 



Rafinesquina? delicatula Savage. 



Rafinesquina? delicatula Savage, Bull. Geol. Surv. Illinois, 23, 1913, p. 45, pi. 1, 



fig. 9. 

 Upper Medinan (Girardeau): Near Thebes, Illinois. 



Rafinesquina deltoidea (Conrad). 



Strophomena deltoidea Conrad, 3d Ann. Rep. New York Geol. Surv., 1839, p. 64; 

 5th Rep., ibid., 1841, p. 37. Vanuxem, Geol. New York, Rep. 3d Dist., 

 1842, p. 46, fig. 2. Emmons, Geology New York, Rep. 2d Dist., 1842, p. 389, 

 fig. 2. Mather, Nat. Hist. New York, Geol., 1, 1843, p. 397, fig. 2. Owen, 

 Amer. Jour. Sci. Arts, 47, 1844, p. 363, fig. 2; Geol. Expl. Iowa, Wisconsin, 

 Illinois, 2d ed., 1844, p. 82, pi. 16, fig. 8; pi. 17, fig. 6. Emmons, Amer. 

 Geology, 1, pt. 2, 1855, p. 197. Billings, Geol. Canada, 1863, p. 163, fig. 141. 



