121 
CATOPTROIDES Odlin., in Looss, 1902m, 857 (Gorgoderinye), 861, 862 (tod. spatula). 
spatula (Odhn., 1902) Odhn. in Looss, 1902m, 857, 862. 
spatulseforme (Odhn., 1902) Odhn. in Looss, 1902m, 857. 
CENTROCESTIXiE Looss, 1899b, 586.— .Tigers., 1903a, 14.— Pratt, 1902a, 888, 894 
(key), contains Centrocestus, Ascocotyle; related genera, Acanthoeasmus, 
Anoiktastoma. 
CEXTROCESTL'S Looss, 1899b, Dec., 584, 586 (m. cuspidatus); to Ksvrpof', spine; 
6 K'fdrdg, Giirtel; 1902m, 832, 833. — Braun, 1902b, 30. — Jaegers., 1903a, 14. — 
Pratt, 1902a, 888, 894 (key). 
cuspidatus (Looss, 1896) Looss, 1899b, 582, 584. 
CENTRODERMA Luehe, 1901, 59 (tod. spinossimum). 
spinosissimum (Stoss., 1883) [Luehe, 1901d, 59]. 
rENTROVARILM Staff., 1904, May 3, 493 (m. lobotes). 
lohotes (MacCallum, 1895) Staff., 1904, May 3, 493 (in Esox lucius, Stizostedion 
vitreum). 
CEPHALOBDELLIDEA Dies., 1850a, 291 (subtribe of Moriocotylea to contain 
Astacobdella, Peltogaster, Pachybdella, Trachelobdella, Podobdella, Pon- 
tobdella, Ichthiobdella, Branchiobdella), 433, 650. — Goldb., 1855, 20. 
CEPHALOGOXIMIX^E Looss, 1899b, Dec., 628; 1900, 561.— Luehe, 1901, 487,488.— 
Pratt, 1902a, 889, 901 (key), includes Cephalogonimus, Einoleptalea, Prcs- 
thogonimus; related genus Stromylotrema. 
CEPHALOGOXEMUS Poir., 1886,22 (m.lenoiri) K-ecpaXp, yovipoc,. — Braun, 1892a, 
642, 645, 696, 704, 705, 713, 715, 733; 1893a, 885,' 886, 890, 893, 909, 911; 
1895, 138; 1900h, 3; 1902b, 68.— Looss, 1894a, 173, 174; 1899b, 5.36, 538, 541, 
625, 626-627, 628, 721.— Luehe, 1899, 539; 1900, 555.— Moniez, 1896, 89.— 
Mont., 1888a, 15, 34, 92, 104: 1892, Oct. 7, 214 (gen. of DistominaeV,, 1893, 82, 
95, 154, 157; 1896, 167.— Xeumann, 1892, 345.— Pratt, 1902a, 889, 901 (kev).— 
Stiles & Hass., 1898a, 85-86, 96.— Stoss., 1892, 4; 1898, 23. 
ameidcanus Staff., 1902, 5 Xov., 719-725, 1 pL, figs. 1-4 (in Rana virescens; Ash- 
bridge’s Bay, Toronto; May; also ? R. clamata); 1902, 30 Dec., 844; 1905, 
July, 52; 1905, Apr. 11, 687 (int. R. vir. ; R. clamata). 
lenoiri Poir. [1885, 3, pi. 2, figs. 1-2;], 1886, 22-24, pi. 2, figs. 1-3 (in Tetrathyra 
vaillantii Roch; Senegal). — Braun, 1892a, 734; 1899b, 715; 1902b, 68. — 
Looss, 1899b, 626, 627; 1902m, 418 (in Trionyx nilotica), 783. — Luehe, 1899, 
539.— Mont., 1893, 83, 102, 105, 106, 107, 157: 1896, 167 (lenori).— Stiles & 
Hass., 1898a, 85, 96.— Staff., 1902, 719, 725.— Stoss., 1895, 213. 
lenori Mont., 1896, 167, for lenoiri. 
ovatus (Rud., 1803) Stoss., 1892, 144; 1896, 126; 1898, 23; 1902, 13 (of 1896, 126, 
syn. of Cyclocoelum mutabile Zed.). — Hass., 1896a, 2 (syns. Ease. ov. Rud., 
Dist. ov. (Rud.); D. bursicola Crep.) (in Gallus dom.). — Looss, 1899b, 629 
(type of Prymnoprion), 720, 721. — Luehe, 1899, 539 (type of Prosthogoni- 
mus). — Mont., 1893, 157. — Rail., 1893a, 368. — Sons., 1890, 134. — Stiles & 
Hass., 1898a, 85. — Reported also for Accipiter ni.sus, Anser cinereus dom., 
Ardea cinerea, Bucephala clangula, Buteo vulgaris, Corvus cornix, Gallinago 
scolopacina, Harelda glacialis. 
pellucidus (Linst., 1873) Rail., 1890, 138; 1893a, 369. — Braun, 1902b, 68. — Hass., 
1896a, 2 (in Gallus dom.). — Looss, 1894a, 174. — Mont., 1893, 157. — Stiles & 
Hass., 1898a, 85. 
CERATIUM Schrank, 1793. — Xitzsch, 1827, 69, contains Cere, tripos [cf. Ceratium 
for Keratella Bory, 1824]. 
CERCARIA iTueller, 1773, 64-70 (contains gyrinus, catellus, podura, lupus, lemna, 
cvclidium, tenax, pleuronectes) [apparently lemna is tvpe; cf. Braun, 1889a, 
312, 315]; 1786.— Abildg., 1793, 88.— Aitken, 1866, 80i, 806, 837; 1872, 144, 
148, 204. — Assenova, 1899, 64-65. — Ben., 1882b, 14. — R. BL, 1888a, 551, 557, 
558, 559, 560, 561, 562, 604, 605, 610, 620, 627, 628, 647; 1890h, 2-3.— Bojanus, 
1818a, 729-730 [688-689].— Borv de St. Vincent, 1823a, 354-355; 1823b, 355- 
356 (cercariees); 1824d, 189-191.— Bose, 1802a, 223-224.— Braun, 1889a, 312 
(only malleus and lemna of IMueller’s original species of 1773 are true Cerca- 
ria); 315 (only inquieta and lemna of Mueller’s, 1786, Cercaria are trueCerca- 
ria); 1890a, 515; 1892a, 767, 775; 1893a, 884; 1893b, 183 (of Dist. recurvatum 
Linst., in Physa alexandrina). — Bruguiere, 1792,456,458. — Bunn., 1837, 529; 
1856a, 246, 250. — Cobbold, 1858a, 9 (structure); 1859d, 365 (in Cervus axis). — 
Dadai, 1888c, 107-109; 1888e, 105-106, pi. 3, fig. 16; 1888f, 84-86, pi. 3, figs. 
