CERCARIA— Continued. 
11, 13 (Gulf of Naples); 1888g, 107-109, pi. 3, figs. 11, 13.— Dies., 1850a, 286, 
293 (of Abildg., syn. of Clieilost.), 294 (of Nitzsch, syn. of Malleolus), 295- 
298, 299 (of Nitzsch, syn. of Histrionella) ; 1855a, 377-100 (revision); 1858d, 
239-290, 245-246.— Duj., 1845a, 475-478; 1845b, 57-58.— Eichwald, 1829a, 
247. — Fewkes, 1822a, 131-145 (with caudal setse); 1882b, 192. — Gmelin, 
1790a, 3891.— Goldb., 1855a, 16.— Herbst, 1787a, 19; 1789a, 129.— Hogg, 1870a, 
232-235, pi. 50, figs. 1-3.— Jackson, 1888, 643, 651, 652, 653.— Johnston, 1865, 
18. — Lereboullet, 1847a, 300 (migrations); 1847b, 266 (in insects). — Lespes, 
1857b, 113-117, figs. 11-16 (of marine mollusks). — Leuck., 1863, 34, 73, 74. 
493; 1879a, 41, 96; 1886d, 31, 72, 376.— Lint., 1905, 333, 401 ^ in Monacanthus 
hispidus). — Looss, 1892a, 124. — Mont., 1888, 4, 14, 24, 35, 37, 44, 45, 46, 74, 76, 
79, 83, 94; 1892, 38.— Mueller, 1786, 119; 1850, 496.— Moul., 1856, 123.— 
Nitzsch, 1827, 66-69.— Nord., 1840, 617, 630-632.— Pag., 1857, 3, 4.— Parkes, 
1891, 267. — PeiToncito, 1879, 7-9 (in Rana esculenta); 1880, 454; 1884, 154; 
1885, 208-209. — Piana, 1882, 12 pp. (of mollusks); 1882, v. 5. — Quintart, 
1905, 724-725 of Barleeia rubra (Adams). — Schrank, 1803, 20. — Sieb., 1839, 
153; 1850, 668. — Sons. ,*1884, 15 Dec., 57-61 (cellules a batonnets). — Steen- 
strup, 1842, 28.— Tasch., 1879, 233.— Vaney, 1901, 29 Apr., 1062-1064; 
1901, 105 (in land mollusks). — Villot, 1875, 479 (in Conus mediterraneus). — 
Wagener, 1834, v. 27 (2), 131-132, pi. 1, fig. 4; 1857, 21.— Ward, 1903, 863, 
864.— Wagner, 1883, 120. 
1888: Cercavia Mont., 1888, 80, misprint. , 
I. Baer, 1827b, 621, pi. 31, figs. 1^. — Dies., 1850a, 295 (sjm. of Cere, vesiculosa). ' 
II. Baer, 1827b, 622, pi. 31. — Dies., 1850a, 296 (syn. of Cere, chlorotica). 
III. Baer, 1827b, 623, pi. 31, fig. 3. — Dies., 1850a, 296-297 (syn. of Cere, brunnea); ! 
1855a, 387. ■ 
V. Baer, 1827b, 625, pi. 31, figs. 5a, a. — Dies., 1850a, 299 (syn. of Histrionella 
ephemera). i 
VI. Baer, 1826a; 1827b, 627, pi. 31, figs. 6a, 6b. — Dies., 1850a, 295 (syn. of Mai- i 
leolus furcatus). 
VII. Baer, 1827b, 629, pi. 31, figs. 7a-b.— Dies., 1850a, 297 (syn. of Cere, fallax); i 
1855a, 388. I 
acerca Biehringer, 1884a, 3 (in Onchidium carpenteri Stearns). — Braun, 1892a, 
807 (in 0. carp.). 
aculeata Ere., 1881. See Par., 1894, 163 (in Lymnsea auricularia; Bologna). 
affinis Eichwald, 1829a, 247-248, pi. 1, fig. 15a-c (in Lymnseus stagnalis). 
agilis Fib, 1857c, 4-5, pi. 1, fig. 2 (in Lvmnseus stagnalis; Turin). — Ben., 1858a, 
1861a, 215, 216.— Dies., 1858d, 248-249 to (Gymnocephala).— Par., 1894, 162. 
agilis Leidy, 1858a, 110 (free in Delaware River); 1904a, 111. 
alata (Hemp. & Ehrenberg, 1828) Monk, 1856a, 213. 
alba Ere., 1881e, 12 (for C. brunnea var. Dies.); 1882a, 248. 
amphistomi subclavati Ben., 1858a, 82 (in Cyclas cornea, etc.). — Dies., 1859c, 435 
(syn. of Diplodiscus subclavatus). — Ere., 1881e, 24, 35; 1882a, 260, 271. — 
Gerv. & Ben., 1859, 212.— Moul., 1856a, 20, 95, 106-107, 125, 208-211, pi. 6, ' 
fig. 10 (syns. Redia gracilis Fil., 1837, Diplodiscus diesingii Fil., Diplocotyle 
mutabile Dies.) (in Planorbis nitidus; Ticini; P. vortex; Moncalier). 
arcuata Steenstrup. — Ere., . — See Par., 1894, 164 (in Lymnsea obscura, L. 
stagnalis; Bologna). 
armata Sieb., 1837, 187 (based on Wagener, 1834, 131); [1835, 336;] 1850, 646, 669; 
1854, 18, 21, 26, 27, 28.— Baillet, 1866b, 9, 92, 93, 94, 96.— Ben., 1858a, 1861a, 
91, 92, 96, 168, 180, 220.— Biehringer, 1884, 2, 11, 14, 17, 24, 25.— Braun, 
1892a, 598, 634, 636, 642, 701, 769, 771, 797, 806, 807, 809, 810, 814; 1893a, 820, 
822, 829, 839, 848, 859, 963; 1900, 225. — Cobbold, 1879b, 454. — Desmonceaux, 
1868, 21. — Dies., 1850a, 298 (includes Dist. tarda); 1855a, 377, 381, 388 to 
(Xiphidiocercaria) (in Lymnseus stagnalis, Planorbis corneus); 1858d, 251- 
252 to (Acanthocephala), larva of Dist. endolobum Duj. (in Plan, corn., Lymn. 
stag., Paludina impura), 259 (of Fil., 1855b, 305, pi. 1, figs. 2^, syn. of C. 
(Acanthocephala) micracantha Dies.); 1859c, 434. — Dowker, 1882a, 9, 11. — 
Ere., 1881e, 13, 15, 18, 21-23, 48, pi. 1, figs. 32-37; 1882a, 249, 251, 254, 257- 
259, 284; 1881e, 19-21; 1882a, 255-257 (of Steenstrup).— Fil., 1854a, 6, 7, 8, 
9, 10, 12, 22, 24; 1855b, 3-5, 7, 20, 21, 23, pi. 1, figs. 1-4 (in Lymn. pal.; Mon- 
