1254 
Polymastodon, .Microlestes. Ctenacodon, Plagiaulax. 
7167. f foliatus, Cope, Amer. Nat, 1882, p. 416 
Catops.); 1884, p. 688, fig. 5; Tcrt. Vort, 
1884, p. 171, pl. 23, d; Mattliew, Bull. 
Am. Mus., IX, 1897, p. 263 (genus dist.). 
7168. fselenodus, Oshorn et Karle, Bull. Amer. 
Mus., VII, 1895, p. 15. 
fEocaeii. infer. 
Nov.-Mexico. 
fEocaen. infer. 
N(v^-Mexico. 
Familia II. fPlagiaulacidae. 
1561. Microlestes, Plieninger, 1847. 
Hypsipryninopsis, Dawkins, 1864. 
7169. f antiquus, Plien., MBirttemb. Jahresli., 
1847, p. 164, pl. 1, fig. 3, 4; Nova Acta 
Ac. Leop., XXII. 1850, p. 902, pl. 71; 
Osborn, Journ. Acad. Philad.. 1888, p. 214. 
fig. 7, 1. 
7170. f rhaeticus, Dawkins, Quart .loiirn. Geol. 
Soc., XX, 1864, p. 396: Owen, Moii. 
Pal. Soc., 1871, p. 8, pl. 1, fig. 16, 16 A. 
7171. jMoorei, Owen, Mon. Pal. Soc.. 1871, 
p. 6, pl. 1, fig. 1—13. 
f Trias (Rhaetic.), 
Germania 
(IVurttemberg). 
f Trias (Rhaetic.), 
I. Britannia. 
t Trias (Rhaetic.), 
I. Britannia. 
1562. t Ctenacodon, Marsh, 1879. 
7172 . 7 serratus, Marsh. Amer. Jonrn. Sc., XVIII, 
1879, p. 396: XXXIII, 1887, p. 333, 
pl. 8, fig. 1,4- — 6; Cope, Amer. Natur., 
1884. p. 693, fig. 7 : Osborn, .Touru. Acad. 
Philad., 1888, p. 216, fig. 8. 
7173. t nanus. Marsh, Amer. Journ. Sc., XXI, 
1881, p. 511. 
7174. f potens, Marsh. Amer. Journ. Sc., XXXIII, 
1887, p. 333, pl. 8, fig. 2, 3, 7—9. 
f Jiirass. super. 
America sept. 
('VVyoming). 
tJurass. super. 
Wyomiug. 
fJurass. super. 
Wyoming. 
1563. t Plagiaulax, Falconer, 1857. 
Plioprion, Cope, 1885. 
7176. f minor, Falconer, Quart Journ. Geol. Soc., 
XIII, 1857, p. 261; Owen. Mon. Pal. Soc.. 
1871, p. 75, pl. 3, fig. 9; Cope, Amer. 
Natur., 1885, p. 493; Osborn, .lourn. Acad. 
Phil., 1888, p. 215 (genus). 
f Jurass. super. 
Europa, 
I. Britannia. 
