446 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Dinorthis (Plaesiomys) subquadrata Continued. 



Plsesiomya eubquadrata Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pp. 194, 



196, 222, pi. 5A, figs. 17-19. 

 Orthis (Dinorthis) subquadrata Wmchell and Schuchert, Geol. Minnesota, 3, 



1893, p. 428, pi. 32, figs. 46-50. Whiteaves, Pal. Foss., 3, pt. 3, 1897, p. 176. 

 Dinorthis subquadrata Hayes and Ulrich, U. S. Geol. Surv., folio 95, 1903, illus. 



sheet, figs. 7, 8. Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 254, fig. 



303m-o. Cumings, 32d Ann. Hep. Dep. Geol. Nat. Res. Indiana, 1907, p. 



904, pi. 34, figs. 1-lb. 

 Richmond: Ohio Valley; Spring Valley, Minnesota; Wilmington, Illinois; Warren 



and Jefferson Counties, Missouri; Lattners, Iowa; Iron Ridge, Wisconsin; 



Lake Winnipeg, Canada; Anticosti; Texas; etc. 

 Plesiotypes Cat. No. 35454, U.S.N.M. (Hayes and Ulrich). 



DINORTHIS SWEENEYI Hall and Clarke. See Dinorthis pectinella sweeneyi. 



Dinorthis (Plaesiomys) ulrlchl Foerste. 



Dinorthis ulrichi Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 320, pi. 7, 



fig. 7a-c. 

 Trenton (Flanagan): Near Becknerville, Clark County, Flanagan and Paris, 



Kentucky. 



DIONE Barrande. See Dionide Barrande. 



DIONIDE Barrande. Genotype: Dione formosa Barrande. 



Dione Barrande, Note Prelim. Sil. Syst. Boheme, 1846, p. 32. 



Dionide Barrande, Neues Jahrb. f. Min., pt. 4, 1847, p. 391, footnote; Syst. Sil. du 

 Centre Boheme, 1, 1852, p. 640. Pictet, Traite de Pal., 2d ed., 2, 1854, p. 

 510. Barrande, Syst. Sil. du Centre Boheme, 1, Suppl., 1872, p. 50. Nich- 

 olson and Etheridge, Mon. Sil. Foss. Girvan Dist., 1880, p. 289. Zittel, 

 Handb. Pal., 2, 1885, p. 594. Miller, N. A. Geol. Pal., 1889, p. 544. Koken, 

 Die Leitfossilien, Leipzig, 1896, p. 15, text fig. 9, fig. 2. Beecher, Amer. 

 Jour. Sci., 4th ser., 3, 1897, pp. 184, 186. Lindstrom, Kongl. Sven. Vet.- 

 Akad. Handl., 34, No. 8, 1901, p. 32. Pictet, Traite de Pal., 2d ed., 2, 1854, 

 p. 510. Raymond, Zittel-Eastman Textb. Pal., 1913, p. 711. 



Polytomurus Hawle and Corda, Abh. d. k. bohmischen Gesell. d. Wiss., 5 (ex- 

 tract), 1847, p. 37, pi. 3, fig. 16. Angelin, Pal. Scandinavica, 3d ed., Holmiae, 

 1878, p. 12. 



Dionlde(?) perplexa Billings. 



Dionide? perplexa Billings, Cat. Sil. Foss. Anticosti, 1866, p. 67. 

 Anticostian (Jupiter River): The Jumpers, Anticosti. 



DIORTCHOPORA Davis. Genotype: D. tenuis Davis. 



Diorychopora Davis, Kentucky, Fossil Corals, Geol. Surv. Kentucky, pt. 2, 

 1885, expl. of pi. 74. 



Diorychopora tenuis Davis. 



Diorychopora tenuis Davis, Kentucky Fossil Corals, Geol. Surv. Kentucky, pt. 2, 



1885, pi. 74, fig. 6. 

 Niagaran (Louisville): Near Louisville, Kentucky. 



DIPHTPHTLLUM Lonsdale. Genotype: D. concinnum Lonsdale. 



Diphyphyllum Lonsdale, Murchison's Geol. Russia in Europe, 1, 1845, p. 622. 



McCoy, British Pal. Rocks Foss., 1854, p. 87. Billings, Canadian Jour., 



n. e., 4, 1859, p. 133. Dybowski, Archiv. f. Naturf. Liv-, Ehst. und. KurL, 



5, 1874, p. 337. Nicholson, Rep. Pal. Prov. Ontario, pt. 1, 1874, p. 31. 



