218 



DISTOMA— Continued. 



oloris Dies., 1855, 64, based on Bellingham, 1844a, 427. 

 onycephalum Galli-Valerio,. 1898m, 923 (for oxycephalum). 



opacum Ward, 1894, v. 15, 173-182, 1 pi. (in Amia calva, Ictalurus punctatus, 

 Perca flavescens, Cambarus propinquus; New Baltimore; Lake St. Clair; 

 August); 1895, 15 Feb., 218-219; (1895), 633-634; 1901, 176-184.— Braun, 

 1900, 234.— Jsegers., 1900, 736, 738, 740.— Looss, 1899b, 621.— Odhn., 1905, 



317. — Stiles & Hass., 1902d, 20 (type of Microphallus). 



ophthalmobium Dies., 1850a, 334 (in Homo; Dresden) [D. oculi humani Gescheidt 

 renamed]; 1858e, 333.— Aitken, 1866, 804, 839; 1872,146,205; 1874,58. — R. Bl., 

 1888a, 630.— de Bonis, 1876, 164; 1882, 180.— Braun, 1883a, 64-65; 1893a, 870; 

 1903, 3. ed., 151 (perhaps F. hepatica); 1906, 156.— Cobbold, 1860a, 6; 1864a, 

 191-192, fig. 41; 1866, 7; 1876, 211. "D. ophthalmobium or Monost. lentis;" 

 1879b, 36, fig. 5.— Dav., 1877a, lxxix, 820, 822.— Dunglison, 1893, 338, 820, 

 1174.— Gamb., 1896a, 63.— Goubert, 1878, 130.— Gunther, 1858, 209.— Har- 

 ley, 1864a, 62.— Hcek, 1859, 42.— Hoyle, 1890, 538.— Ijima, 1889b, 123.— 

 Jamieson, 1897a, 74.— Kholodk., 1898, 26, 32, 34, pi. 11, fig. 28; 1899a, 152 — 

 Kuech., 1855, 181, 222-223, pi. 4, figs. 13-15.— Leuck., 1863a, 526, 610-613, 

 633, fig. 205; 1889, 440, fig. 191.— Linst., 1878, 3.— Moniez, 1896, 152-153.— 

 Moquin-Tandon, 1861, 373.— Mosler & Peiper, 1894, 177.— Schneidemuehl, 

 1896, 302.— Stiles, 1898a, 48; 1902s, 25, 29, 34.— Verrill, 1870, 171.— Vogt, 

 1878, 10, 13.— Wagner, 1883, 121.— Ward, 1895, 328 (perhaps young D. lan- 

 ceolatum); 1903, 866 to Agamodist.— Wood & Fitz, 1897, 335. 



opisthotrias Luetz, 1895a, 181-188, pi. 2, figs. 1-4 (in Didelphys aurita); 1895b, 

 189-193; 1896a, 623.— Braun, 1899g, 492 (to Harmost.); 1900h, 12; 1901e, 

 338-339 (to Harmost.).— Looss, 1899b, 748 (to Heterlope).— Luehe, 1899, 532.— 

 Par., 1896, 3, 5. 



orbiculare Dies., 1850a, 349 (in Cebus trivirgatus; Brazil); 1855, 64, pi. 2, figs. 

 20-22; 1858e, 335-336.— Braun, 1901e, 311, 312, 313, fig. 14.— Cobbold, 1860a, 

 7; 1879b, 289.— Stoss., 1892, 36 (in Nyctipithecus trivirgatus; Brazil). 



oricola Leidy, 1884a, 47 (in Alligator mississippiensis; Florida); 1891a, 414 (syn. 

 of D. ineommodum); 1904a, 180.— Braun, 1893a, 872.— Mont., 1892, 715 (ori- 

 cula). — Stoss., 1895, 219 oricula (syn. of D. pseudostomum). 



oricula Mont., 1892, 715, for oricola.— Stoss., 1895, 219. 



ornithorhynchi Johnson, 1901a, Nov. 7, 334-338, pi. 22, figs. 1-4 (in Ornithorhyn- 

 chus anatinus Shaw). 



orthagorisci molse Dies., 1855, 64; 1858e, 342 (in Orthagoriscus mola; Ireland) 

 (renamed D. macrocotyle). 



osculatum Looss, 1901e, 654-656, fig. 11 (in Motella vulgaris). 



ovatum (Rud., 1803) Rud., 1809a, 50, 357-358, 420, 432; 1819a, 93, 121, 674.— 

 Anacker, 1887c, 513.— Baillet, 1866b, 105.— Baird, 1853a, 51 (includes Hirudo 

 fasciolaris Mueller, Fasc. ovata Rud.).— R. BL, 1888a, 643.— Braun, 1892a, 

 714, 734, 736, 765; 1893a, 876, 877, 879, 893; 1893d, 467, 468; 1901, 12, 13, 14, 

 15, 16; 1901, 258-259; 1901, 561; 1902b, 68 (to Cephalogonimus by Sons., 

 1890; type of Prosthogonimus Luehe, 1899, 539; and of Prymnoprion Looss, 

 1899b, 628), 69, 72 (in Corvus corone) 73, 74, 75, 76, 77, 78, 79, 80, 82, 83, 

 85.— Caruccio, 1886, 293.— Cobbold, 1860a, 9; 1879b, 440.— Crep., 1837a, 317, 



318, 322, 326, 329; 1846, 130, 131, 134-137, 139, 141-143, 146; 1851, 284.— 

 Dav., 1877a, lxxix. — Dies., 1850a, 335-336 (includes: Igeln in Huhnereiern 

 Hanow; Hirudo fasciolaris Mueller, Fasc. ov. Rud.,,D. anatisdomesticseRud.); 

 1858e, 333 (in Fringilla montana, Scolopax gallinago, Ardea grus, Fulica 

 atra).— Duj., 1845a, 394-395.— Giebel, 1857, 265.— Hahn & Lefevre, 1884a, 

 516.— Hass., 1896a, 2 (to Cephalogonimus).— Hugi., 1827, 48.— Juel, 1889, 

 36.— Kowal., 1894, 2; 1894, 221; 1895, 350; 1895, 372-390, pi. 8, fig. 7; 1896d, 

 (7), 257, to (Cephalogonimus) (in Corvus cornix, Gallinago scolopacina; Du- 

 blany).— Landois, 1882a, 13; 1882, 23 (in hen's egg).— Linst., 1873, 95, 96, 

 97, 98, 100, 101, 103.— Lint., 1887, 367-369 (in hen's egg; U. S. A.).— Looss, 

 1894a, 264; 1899b, 628-629 (type of Prymnoprion), 720, 721; 1900, 608.— 

 Luehe, 1899, 539 (type of Prosthogonimus).— Mehlis, 1831, 178.— Mont., 1893, 

 157, 190.— Mueh., 1898, 29-30, 100.— Nord., 1840, 616.— Olfers, 1816, 44.— 

 Sambon, 1900, 219.— Schneidemuehl, 1896, 303.— Sieb., 1835, 64, 65; 1836, 

 233.— Sons., 1890, 134.— Spencer, 1889, 109 (in hen's egg) .—Staff . , 1902, 719.- 

 Stoss., 1892, 144 (to Cephalogonimus); 1898, 23.— Tschudi, , 75.— Ver- 

 rill, 1870, 179.— Wedl, 1857, 241-242, pi. 1, fig. 1.— Wolff huegel, 1900, 9, 24, 

 26, 32. — Also reported for Anas boschas dom., A. clangula, A. clypeata, A. 



