! DISTOMA — Continued. 
medians Olss., 1876, 25-26, pi. 4, figs. 59-63 (in Bufo vulgaris). — Braun, 1892a, 583, 
642, 721, 736, 737.— Looss, 1893b, 811; 1894a, 2, 82, 83, 84, 91 (e. p., syn. of 
D. clavigerum), 92, 95, 96, 99, 105-108, 119, 126, 137, 158, 159, 167, 173, 181, 
182, 191, 192, 197, 210, 211, 212, 214, 219, 221, 230, 256, 264, 273, pi. 2, figs. 
36-38, pi. 8, figs. 168, 169; pi. 9, figs, 187-188 (in Bufo calamita; B. variabilis; 
B. vulgaris; Rana esculenta; R. temporaria) ; 1894, 5, 50; 1896b, 91, 94, 96; 
1898, 461; 1899b, 616, 622, 623 (to Pleurogenes).— Luelie, 1900, 558; 1901, 169.— 
Mont., 1893, 86, 95, 102; 1896, 151, 152.— Mueh., 1898, 23.— Nickerson, 1900, 
813, 814.— Staff., 1900, 412, 414; 1902, 724.— Stoss., 1889, 70. 
medians Olss. of Staff., 1900, Aug. 30, 412. — Staff., 1905, Apr. 11, 683 =D. arcanum 
Nickerson, 1900, Oct., to Loxogenes as type. 
megacotyle Dies., 1850a, 379 (negacotyle), 659, D. velellse Fib, renamed (in Velella 
spirans; Naples) (negacotyle).— Cobbold, 1860a, 30. — Linst., 1904a, 14 (in 
Stenodusnelma; Siberia). — Mont., 1893, 123. — Moul., 1856a, 217 (in Vel. sp.). 
megalocotyle Mont., 1893, 52, 53, pi. 8, fig. 124. — Linst., 1903, 354 (megatocyle, 
misprint). 
megaloon Linst., 1879, 337-338 (in Lacerta agilis).' — Stoss., 1895, 231 (in L. ag.). 
megastomum RucL, 1819a, 102, 387 (in Squalus galeus; Arimini, May). — Ariola, 
1899, 7 (includes D. soccus Mol.). — Ben., 1858a, 1861a, 170; 1870, 6. pi. 4, 
fig. 7; 1870, 7.— Braun, 1892a, 647, 679, 701, 702, 728, 734, 738, 761, 784, 786, 
873; 1893b, 176.— Bremser, 1824, 133.— Cams, 1884, 129.— Cobbold, 1860a, 24; 
1872b, 91; 1879b, 49, 299.— Crep., 1837, 310, 326.— Crety, 1892, 21-24, fig. 1; 
1892c, 399; 1892, (92-97); 1893a, 380-382, 383.— Darr, 1902, 667.— Dies., 1850a, 
357 (includes Rud., 1819a, 102, 387; Eisenhardt, 145; Bremser, 1824c, pi. 9, 
figs. 5-8; Kuhn, 1829, 463, pi. 11, figs. 4-5; Duj., 1845a, 471); 1858, 339 (in 
Scylliumcatulus).— Du]., 1845a, 471. — Eisenhardt, . — Jacoby, 1899c, 1900, 
16-24, figs. 13-16. — Jaegers., 1900b, 68-74, figs. 1-4 (copulatory organs). — 
Kowal., 1895g, 20 (60). — Kroyer, 1852-53a, 851 (in Galeus vulgaris). — Kuhn, 
1829,463. — Looss, 1894a, 128; 1899b, 570 (thinks that this form may belong 
to Azygia); 1902m, 829, 830 (type of Ptychogonimus). — Linst., 1903, 354. — 
Luehe, 1900, 490.— Mont., 1888a, 64, 72; 1890, 426; 1892, Oct. 7, 189; 1893, 6, 
7, 33, 34, 35, 53, 71, 77, 78, 79, 82, 95, 102, 192, 193, pi. 1, fig. 2, pi. 7, figs. 
j 105-109, pi. 8, figs. 115, 116, 133-135. — Odhn., 1906, 64 (includes D. lymphat- 
t icum Linst.).— Orley, 1885, 218.— Stoss., 1886, 23; 1890, 43; 1898, 38.— Villot, 
i‘ 1878, 2, 9, 11, 13 (in Carcharias; Scyllium catuliis; Galeus canis). — Wagener, 
. 1860, 167.— Wedl, 155, 383, pi. 2a, fig. 16.— Will.-Suhm, 1870, 5-7; 1871, 
179-181, pi. 11, figs. 4-5, — Also reported for Squalus mustelus, Mustelus 
vulgaris. 
\ megastomum Grobben, 1878a, 89 (in Portunus depurator). 
megastomum leporis Kuhn, 1829c; 1830a; 1830b. — Stiles & Hass., 1905a, 941. 
megatocyle Linst., 1903, 354, for megacotyle. • 
megnini Poir., 1885, 4, 5, 14-15, 22, 25, 31, 32, 33, 39, 41, 45, 49, 51, 54, 64, 65, 66, 70, 
76, 88, 94, 109, 112, 116, 117, 118, 120, 129, 130, 133, 144, 150, pi. 23, fig. 8, pi. 29, 
fig. 2, pi. 31, figs. 5-7, ol. 34 (in a fish). — Braun, 1892a, 569, 597, 603, 608, 623, 
624, 625, 631, 666, 671, 673, 674, 677, 690, 712, 717, 724, 731, 733.— Buttel- 
Reepen, 1900a, 590; 1902, 184, 192, 202.— Darr, 1902, 683, 687, 693.— Jackson, 
1888, 644. — Lander, 1904a, 7. — Looss, 1894a, 145 (megninii). — Mont., 1893 
(megninii), 23, 27, 29, 30, 32, 33, 34, 36, 37,40, 47, 48, 64, 80, 81, 93, 94, 95, 104, 
113, 119, 125, 126, 127, 134, 135 (megninii), 102, 106, 107; 1896, 154 (megninii).— 
Wolf, 1903, 619, 621. 
megninii Mont., 1893, 102, for megnini. 
metis (Goeze, i782) Zed., 1800a, 164, 194-196. — Dies., 1850a, 382 (syn. of D. trigo- 
7 nocephalum).— Rud., 1809a, 415 (syn. of D. trig.). 
* mentolatum Mueh., 1898, 19, for mentulatum. 
mentulatum Rud., 1819a, 103, 388-389, 681 (in Coluber natrix, Lacerta agilis, 
, L. maculata; Berlin, Arimini, Apr. and July). — Braun, 1891, 99; 1892a, 766, 
« 780, 784, 785; 1901b, 15.— Cobbold, 1860a, 19.— Dies., 1850a, 355 (includes 
D. colubri natricis intestinale Rud., D. colubri tessellati Rud.; D. lacertte 
Rud.); 1858e, 339 (in Tropidonotus natrix).^ — Duj., 1845a, 415, to (Brachylai- 
mus).— Ere., 1881e, 73, 74, 75, 76, 77, 78, 79, 82, 89 (in Tropidonotus natrix); 
1882a, 309, 310, 311, 312, 313, 314, 315, 318, 325.— Holstein-Beck.— Jackson, 
1888, 650 (rep. system).— Kampmann, 1894b, 451, 454, 456, 457, 462, pi. 20, 
figs. 6-9.— Linst., 1879, 184.— Looss, 1899b (=Lepoderma).— Luehe, 1899, 
