BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 475 



ELKANIA Ford. Genotype: Obolclla desiderata Billings. 



Billinssia Ford (not Dekoninck, 1876), Amcr. Jour. Sci., 3d scr., 31, 1885, p. 4C6. 



Elkania Ford, Amer. Jour. Sci., 3d ser., 32, ISSG, p. 325.— Miller, N. A. Ceol. 

 Pal., 18S9, p. 346.— Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pp. 75, 

 165; lltli Ann. Rep. New York State Geologist, 1894, p. 241.— Walcott, Proc. 

 U. S. Nat. Mua., 28, 1905, p. 321. 



Elkania ambigua (Walcott). 



Obolella? ambigua Walcott, Mon. U. S. Geol. Surv., 8, 1884, p. 67, pi. 1, fig. 2, 



Billingsia? ambigua Ford, Amer. Jour. Sci., 3d ser., 31, 1886, p. 4G7. 



Elkania ambigua Ford, Amer. Jour. Sci., 32, 18S6, p. 325. — Hall and Clarke, Pal. 



New York, 8, pt. 1, 1892, p. 78.— Walcott, Mon. U. S. Geol. Surv., 51, 1912, 



p. 502, pi. 51, figs. 2, 2a-c. 

 Lower Pogonip; Northeast of Adams Hill and southeast of Jackson Mine, Eureka 



District, Eureka County, Nevada. 

 Holotype and plesiotype. — Cat. No. 24554, U.S.N .M. 



Elkania desiderata (Billings). 



Obolella desiderata Billings, Pal. Fossils, 1, Geol. Surv. Canada, 1SG2, p. 69, fig. 

 62 on p. 68.— Davidson, Geol. Mag., 5, p. 309, figs. 1, 2.— Walcott, Bull. U. S. 

 Geol. Surv., 30, p. 111. 



Billingsia desiderata Ford, Amer. Jour. Sci., 3d ser., 31, 1886, p. 466, figs. 1, 2. 



Elkania desiderata Ford, Amer. Jour. Sci., 32, 1886, p. 325. — Hall and Clarke, 

 Pal. New York, 8, pt. 1, 1892, p. 77, pi. 3, figs. 15-19; lltli Ann. Rep. State 

 Geol. New York, 1892, pi. 3, figs. 13-14.— Scliucliert, Bull. U. S. Geol. Surv., 

 87, 1897, p. 221.— Walcott, Mon. XJ. S. Geol. Surv., 51, 1912, p. 562, pi. 51, 

 figs. 1, la-d. 



Canadian (Levis, Didymograptus zone): Point Levis, Quebec. 



Elkania Ida (Billings). 



Obolella ida Billings, Pal. Fossils, Geol. Surv. Canada, 1, 1865, p. 71, fig. 63 



(adv. sheets, 1862.)— Walcott, Bull. U. S. Geol. Surv., 30, 1886, p. 111.— 



Dawson, Canadian Rec. 



Sci., 3, 1888, p. 55; Peter Redpath Mue., McGill Univ., 1888, p. 55. 

 Billingsia? ida Ford, Amer. Jour. Sci., 3d ser., 31, 1886, p. 467. 

 Elkania ida Ford, Amer. Jour. Sci., 32, 1886, p. 325 (gen. ref.). — ^Walcott, Mon. 



U. S. Geol. Surv., 51, 1912, p. 563, pi. 30, figs. 20, 20a; pi. 51, figs. 4, 4aH:. 

 Ozarkian? (Levis-erratics) : Point Levis, Quebec. 



Elkantia puetiosa Ford. See Acrothete pretiosa. 



Elliptocephala undulostriata Miller. See Proetus undulostriatua. 



ELPE Barrande. Genotype: E. inchoata Barrande. 



Elpe Barrande, Syst. Sil. du Centre Boheme, 1, Suppl., 1872, p. 510. — Zittel, 



Handb. Pal., 2, 1885, p. 554.— Ukich, Zittel-Eastman Textb. Pal., 1, 1900, 



p. 646.— Bassler, ibid, 2d ed., 1913, p. 741. 

 Leioditia (Ulrich MS.) Jones, Geol. Sujv. Canada, Cont. Micro-Pal., 3, 1891, p. 94. 



Elpe cincinnatlensis (Meek). 



Cythere Cincinnatlensis Meek, Proc. Acad. Nat. Sci. Philadelphia, 1872, p. 331; 

 Geol. Surv. Ohio, Pal., 1, 1873, p. 158, pi. 14, figs, la-d.— Miller, Cincinnati 

 Quart. Jour. Sci., 1, 1874, p. 120. — Jones, Ann. Mag. Nat. Hist., 5th ser., 14, 

 1884, p. 395, footnote. 



Cytheropsia cincinnatiensis Miller, N. A. Geol. Pal., 1889, p. 541, fig. 993. 



Maysville (Corryville): Cincinnati, Ohio, and vicinity. 



