402 INDEX GENERUM MAMMALIUM. 
Mastotherium—Continued. 
Extinct. 
Mastotherium: “a6ros, breast; §npiov, wild beast—in allusion to the mamillary 
prominences or processes on the molar teeth. 
Matacus Rarinesqub, 1815. Edentata, Dasypodidee. 
Analyse de la Nature, 57, 1815. 
Nomen nudum. ‘Mutacus R. sp. do.’ (=‘espece du genre précédent,  Dasypus). 
Matacus: Mataco, South American name for the three-banded armadillo ( Dasy- 
pus tricinctus). 
Matyoscor AmMEGHINO, 1902. Glires, Octodontidee. 
Anal. Mus. Nac. Buenos Aires, VIII (ser. 3a, I), 241, lam. 111, figs. 13a-c, 1902 
(sep. Nov. 15). 
Type: Matyoscor perditus Ameghino, from the Pampean beds of the valley of 
Tarija, southern Bolivia. 
Extinct. Based on the first right upper molar. 
Matyoscor: Anagram of Myocastor. 
Maxschlosseria AMEGHINO, 1901. Ungulata, Ancylopoda, Isotemnide. 
Bol. Acad. Nac. Cien. Cordoba, X VI, 413, July, 1901 (sep. p. 67). 
Type: Maxschlosseria preterita Ameghino, from the ‘Cretaceous’ of Patagonia. 
Extinct. 
Maaschlosseria: In honor of Max Schlosser, of the University of Munich; author 
of ‘Die Affen, Lemuren . . . des Europiischen Tertiiirs,’ 1887-90, etc. 
Mazama Rarinesqur, 1817. Ungulata, Artiodactyla, Cervide. 
Am. Monthly Mag., I, No. 5, p. 363, Sept., 1817; No. 6, p. 437, Oct., 1817; I1, No. 1, 
p. 44, Nov., 1817; Minera: Science, new ser., I, 208, Feb. 22, 1895 (type fixed). 
Species: Mazama bira Rafinesque, and M. pita Rafinesque (type), from Paraguay. 
Mazama bira is based on ‘le Quatriéme Cerf ou Gouazoubira,’ of Azara (= Cervus 
simplicicornis) ; M. pita on ‘le Troisiéme Cerf ou Gouazoupita, of Azara(=C.rufus). 
In Sept., 1817, Rafinesque described Mazama bira and M. pita; in October he 
added M. ovina ( — Oris montana Ord), M. pudu, and M. caprina; and in Novem- 
ber he published a formal description of the genus with the species M. tema, M. 
dorsata ( — Ovis montana Ord), and M. sericea. Mazama has usually been quoted 
from the third reference and restricted to the Rocky Mountain goat. 
Mazama: Mexican mazame, macame or teuthlamacame, names used by Hernandez, 
in 1651, for some species of Mexican ungulate. 
Mazama (subgenus of Cervus) H. Surru, 1827. Ungulata, Artiodactyla, Cervide. 
Griffith's Cuvier, Animal Kingdom, V, 314—318, 1827. 
Species, 8: Cervus virginianus Boddaert, €. mexicanus Gmelin, €. clavatus H. 
Smith, €. macrotis Say, C. macrourus Rafinesque, from North America; C. 
paludosus Desmarest, C. campestris F. Cuvier, from South America; and C. 
nemoralis H. Smith, from Central America. 
Name preoccupied by Mazama Rafinesque, 1817, a different genus of Cervidee 
(=Subulo H. Smith). Replaced by Oplacerus Haldeman, 1842. 
Mazama OaiLpy, 1837. Ungulata, Artiodactyla, Antilocapridze. 
Proc. Zool. Soc. London, for 1836, No. xrvirm, 137, June 27, 1837. 
Type: Mazama furcifer (moet furcifer H. Smith =Antilocapra americana 
Ord), from the plains of the Upper Missouri, western United States. 
Name preoccupied by Mazama Rafinesque, 1817, a genus of Cervidie. See Antilo- 
capra, Ord, 1818. 
Mecorhinus AmMEGHINO, 1894. Edentata, Megalonychidee. 
Enum. Syn. Mamm. Foss. Form. Éocénes Patagonie, 156-157, Feb., 1894. 
Type: Mecorhinus primus Ameghino, from the Eocene of Patagonia. 
Extinct. 
Mecorhinus: unKos, length; pis ó:vós, nose—in allusion to the long nasals. 
'" Les nasaux sont deux fois plus longs que d'habitude." (AMEGHINO. ) 
