406 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Dlanulltes petropolitanus — Continued. 



Hexaporites fungiformis Leuchtenberg in Eichwald Geog. Russ., 1846, p. 370. — 



Eichwald, Leth. Rossica, 1, 1860, p. 478. 

 Dianulites petropolitanus var. hexaporites Dybowski, Die Chaetetiden der Ostbal- 



tischen Silurform., 1877, p. 30, pi. 1, figs. 6, 6a. 

 Monotrypa (Chtetetes?) cumulata Ulrich, Geol. Minnesota, 3, pt. 1, 1893, p. 



307, pi. 27, figs. 26, 27. 

 Middle Ordovician: Esthonia, Russia; Goodhue County, Minnesota (Prosser); 



Ottawa, Ontario, 

 Plesiotypes.— Cat. Nos. 26906, 57339, 57340, U.S.N.M. (Holotype of M. mmulata). 



Dianulites petropolitanu.s var. hexaporites Dybowski. See Dianulites petropo- 

 litanus. 



Dianulites quebecensis Miller. See Mesotrypa quebecensis. 



Dianulites rotunda Miller. See Mesotiypa rotunda. 



Dianulites selkirkensis Miller. See Mesotrypa selkirkensis. 



DIAPHOROSTOMA Fischer. Genotype: Platyostoma ventricosum Conrad . 



Platyostoma Conrad (not Meigen, 1903), Jour. Acad. Nat. Sci. Philadelphia, 7, 

 1842, p. 275.— Hall, Pal. New York, 2, 1852, pp. 103, 286; ibid., 3, 1859, pp. 

 293, 299.— Nicholson, Rep. Pal. Prov. Ontario, pt. 1, 1874, p. 117.— Waagen, 

 Mem. Geol. Surv. India, Pal. Indica, 13th ser., 1, 1880, p. 103. — Lindstrom, 

 Kongl. Sven. Vet.-Akad. Handl., 19, No. 6, 1881, p. 61.— Zittel, Handb. 

 Pal., 2, 1882, p. 217.— Koken, Neues Jahrb. Min., Geol., 6, 1889, pp. 349, 

 468, 470.— Miller, N. A. Geol. Pal., 1889, p. 418.— Nettelroth, Kentucky, 

 Foss. Shells, Geol. Surv. Kentucky, 1889, p. 183. — Koken, Die Leitfossilien, 

 Leipzig, 1896, p. 128.— Grabau, Bull. Buffalo Soc. Nat. Sci., 6, 1899, p. 274. 



Diaphorostoma Fischer, Man. Conch., 1885. — Grabau, Bull. New York State 

 Mus., 45, 1, 1901, p. 211; Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 211.— Grabau 

 and Shimer, N. A. Index Fossils, 1, 1909, p. 679.— Dall, Zittel-Eastman 

 Textb. Pal., 2d ed., 1913, p. 54. 



Diaphorostoma auriforme (Hall). 



Capulus auriforuus Hall, Pal. New York, 1, 1847, p. 31, pi. 6, figs. 9a, b; 12th 



Rep. New York State Cab. Nat. Hist., 1859, p. 07. 

 Stomatia auriformis Emmons, Amer. Geology, ], pt. 2, 1855, p. 157. 

 Platyostoma auriforme Rajonond, Ann. Carnegie Mus., 4, 1908, p. 217. 

 Chazyan or Trenton : Galway, New York. 



Diaphorostoma brownsportense (Foerste). 



Platyceras brownsportensis Foerste, Jour. Geol., 11, 1903, p. 709. 

 Diaphorostoma brownsportensis Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, 



p. 64, pi. 1, fig. 14. 

 Niagaran (Brownsport): Brownsport Fm-nace, Cerro Gordo, and Bath Springs, 



Tennessee. 



Diaphorostoma campauulatum (Winchell and Marcy). 



Platyceras campanulatum Winchell and Marcy, Mem. Boston Soc. Nat. Hist., 



1, 1865, p. 99, pi. 2, fig. 16. 

 Niagaran (Racine): Chicago, HUnois. 



Diaphorostoma cliltonense Foerste. 



Diaphorostoma cliftonensis Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 



63, pi. 3, figs. 41A, B; Cincinnati Soc. Nat. Hist. Jour., 21, 1909, p. 30. 

 Clinton: Clifton, Tennessee (Osgood); Martins, Lewis County, Kentucky (West 



Union). 



