METAXYTHERIUM—METRIODROMUS. 419 
Metaxytherium—OContinued. 
Hippopotamus dubius Cuvier; the temporal portion of a second skull; a lower 
jaw, with molars identical with those of H. medius Cuvier; some vertebr:e, 
ribs, and other bones. 
Extinct. 
Metaxytherium: jetaév, between; Snpior, wild beast—i. e., intermediate between 
the dugong and the manatee. 
Meteorus (subgenus of Vesperus) Kotenati, 1856. Chiroptera, Vespertilionide. 
Allgem. Deutsch. Naturhist. Zeitg., Dresden, neue Folge, II, 131, 163-167, 1856. 
Species, 5: Vesperus nilsonii ( Blasius), V. discolor (Kuhl), V. leucippe ( Bonaparte), 
V. aristippe (Bonaparte), and V. savii (Bonaparte), from Europe. 
Name preoccupied by Meteorus Haliday, 1835, a genus of Hymenoptera. 
Meteorus: uerécoporv, meteor—in allusion to the flight. 
Meteutatus AwEGuiNo, 1902. Edentata, Dasypodidee. 
Bol. Acad. Nac. Cien. Córdoba, XVII, 54—56, May, 1902 (sep. pp. 52-54). 
Type: Proéutatus lageniformis Ameghino, from the Pyrotherium beds of Patagonia. 
Extinct. 
Meteutatus: era, after; + Eutatus. 
Methylobates AMEGHuiNo, 1884. Primates, ii 
Filogenia, 365, 1884; Cont. Conocimiento Mamif. Fósil. Repüb. Argentina, in Act. 
Acad. Nac. Cien., Córdoba, VI, 90-93, 1889. 
A genus defined to show the probable evolution of the gibbons. *'La ausencia 
6 presencia de un hueso intermediario del carpo, nos permite dividir los 
gibones en dos grupos bien definidos de los que el uno, que es el predecesor ó 
más antiguo, continuaremos designándolo con su nombre científico de Hylo- 
bates, y el otro, como que desciende del primero, lo llamaremos Methylobates 
(después de Hylobates)." (AMEGHINO. ) 
Methylobates: eta, after; +-Hylobates. 
Metopocetus Corr, 1896. Cete, Balzenidee. 
Proc. Am. Philos. Soc., XX XV, No. 151, pp. 141-143, Aug., 1896. 
Type: Metopocetus durinasus Cope, from the Miocene marl near the mouth of the 
Potomac River, Maryland. 
Extinct. Based on a ‘cranial fragment.’ 
Metopocetus: uércozov, brow; Kt 0s, whale—in allusion to ‘‘the temporal crests 
which diverge forwards." (CoprE. ) 
Metopotherium AmeEGHINo, 1891. Edentata, Megalonychidee. 
Nuevos Restos Mamif. Fós. Patagonia Austral, 38, Aug., 1891; Revista Argentina 
Hist. Nat., I, entr. 5a, 324, Oct. 1, 1891. 
Type: Metopotherium splendens Ameghino, from the Lower Eocene of southern 
Patagonia. 
Extinct. 
Metopotherium: uércymov, brow; Inpiov, wild beast—in allusion to the charac- 
ter, ‘frente plana y ancha.’ 
Metopotoxus AMEGHINO, 1895 (?). Edentata, Glyptodontid:e. 
** Rev. Jard. Zool. Buenos Ayres, III, 123, 1895"; TRouEssanT, Cat. Mamm., new 
ed., fasc. v, 1124, 1898. 
Type: Metopotorus sp.? from the Eocene of Patagonia. 
Extinct. 
Metopotoxus: uérczov, brow; tT0é0v, bow. 
Metriodromus AwrEcniwNo, 1894. Marsupialia, Epanorthidee. 
Énum. Syn. Mamm. Fos. Form. Éocénes de Patagonie, 86-88, Feb., 1894. 
Species: Metriodromus arenarius Ameghino, and M. spectans Ameghino, from the 
Eocene of Patagonia. 
Extinct. 
Metrivdromus: uérpios, moderate; S0sos, running. 
