50 Mamm. 
MAMMALIA. 
f Scelidotherium Icevulens, n. sp., Moreno & Mercerat, Rev. Mas. la 
Plata, i, p. 224, Mid. Tertiary, Catamarca. 
j* Scelidotherium parvulum, n. sp., Moreno & Mercerat, t. c. p. 225, 
ibid. 
f Megatherium burmeisteri, p. 225, bergi, p. 227, n. spp., Moreno & 
Mercerat, l. c., ibid. 
-\ Promegatherium, Amegh., identified by Burmejster (supra, p. G) 
with Megatherium. 
f Promegatherium parvulum, n. sp., F. Ameghino, Rev. Arg. Hist. 
Nat. i, p. 249, Tertiary, Argentina. 
f Ortotherium robustum , -fschlosseri, p. 151, f seneum , p. 152, Tertiary, 
Parana, Ameghino, Rev. Arg. Hist. Nat. i, n. spp. 
t Hapalops ru[e]timeyeri, p. 153, ielongatus, f crassidens, fangustipalatus, 
f robustus, -\brevipalatus , p. 316, f diversidens, f longipulatus, f gracilidens, 
f subquadratus, f depressipalatus , p. 317, f testudinatus, f cylindricus, 
f minutus , p. 318, Tertiary, Patagonia, Ameghino, Rev. Arg. Hist. Nat. i ; 
H. grandcevus , Tertiary, Argentina, A. Mercerat, Rev. Mas. la Plata, ii, 
p. 13 : n. spp. 
* \ Parhapalops rectangular is, n. g. & sp., Ameghino, Rev. Arg. Hist. 
Nat. i, p. 318, Tertiary, Parana. 
\ Schismotherium patagonicum, n. sp., Mercerat, Rev. Mus. la Plata, ii, 
p. 9, Tertiary, Patagonia. 
^ t Stenocephalus australis , n. g. & sp., Mercerat, t.c. p. 10, ibid [name 
preoccupied. — R. L.], icognatus, p. 11, t hybridus, p. 12, id. ibid., 
n. spp. 
This and the two preceding species are identified by Ameghino, 
Rev. Arg. Hist. Nat. i, p. 347, with Hapalops. 
•}■ Trematherium nanum , n. sp., Ameghino, t. c. p. 319, ibid. 
f Pseudhapalops observationis, n. g. & sp., fforticulus, f longitudinalis, 
n. spp., ibid., Ameghino, t. c. p. 319. 
^ j m Amphihapalops congermanus, n. g. & sp., p. 319, f gallaicus, f cadeus, 
n. spp., ibid. p. 320, Ameghino, t. c. 
'*f Geronops circularis, n. g. & sp., Ameghino, p. 320, ibid. 
J -j ' Analcimorphus inversus, n. g. & sp., Ameghino, l. c., ibid. 
■\Xyophorus sidcatus, f atlanticus, f andinus , ibid., Ameghino, t. c. 
p. 321 : n. spp. 
f P lamps obesus, n. sp., Ameghino, l. c., ibid. 
• Paraplanops oblongus, n. g. & sp., Ameghino, l. c., ibid. 
•j- Eucholceops latirostris, f externus, \fronto , f litoralis, p. 322, f fissi- 
gnathus, p. 323, ibid., Ameghino, t. c.\ f E. latifrons, p. 15, f lafossei, 
p. 16, ibid., Mercerat, Rev. Mus. la Plata, ii : n. spp. The two last 
species are provisionally identified by Ameghino, Rev. Arg. Hist. Nat. i, 
p. 348, with his E.fronto and E. externus. 
4 j -Pelecyodon cristatus , n. g. & sp., ibid., f robustus, f arcuatus, *j* petrceus , 
p. 323, f maximus, p. 324, n. spp., ibid., Ameghino, t. c. 
4 f Al etopotherium splendens, n. g. & sp., Ameghino, l. c., ibid. 
•j 'Nematherium longirostris , n. sp., Ameghino, l. c.. ibid. 
