342 INDEX GENERUM MAMMALIUM. 
Hy podon—Continued. 
Species: The species include ** dolphins which have two teeth in the lower jaw, 
hitherto constituting the genus Diodon; .. . Examples H. desmarestii; H. 
sowerbyi." (HALDEMAN. ) 
Hypodon: 76, under, below; 66@v=650vs, tooth—in reference to the teeth, 
which are present in the lower jaw but are lacking in the upper jaw. 
Hypogeomys GRaANDIDIER, 1869. Glires, Muridee, Cricetinee. 
Revue et Mag. de Zool., Paris, 2° sér., X XI, 338-339, Sept., 1869. 
Type: [ypogeomys antimena Grandidier, from the Tsidsibon and Andranoumene 
rivers of Ménabé, on the west coast of Madagascar. 
Hypogeomys: 676, under; yj, earth; “0s, mouse—from its subterranean habits. 
Hypohippus (subgenus of Anchitherium) Letpy, 1858. Ungulata, Equid:e. 
Proc. Acad. Nat. Sci. Phila., 1858, 26; Journ. Acad. Nat. Sci. Phila., 2d ser., 
VII, 311-312, 402, pl. xxr, figs. 11-12, 1869 (raised to generic rank). 
Hyohippus ScntossER, Morphol. Jahrbuch, XII, Heft 1, p. 14, 1886 (misprint). 
Type: Anchitherium ( Hypohippus) affinis Leidy, from the Pliocene of the valley of 
the Niobrara River, Nebraska. 
Extinct. Based on ‘‘ the crown of an upper molar tooth.” 
Hypohippus: 6706, under; tos, horse. 
Hypopleurus Jourpan, 1890. Fere, Viverride. 
JouRDAN, teste ScuLosser, Die Affen, Lemuren, Chiropteren, ete., Europáischen 
Tertiürs, Theil rrr, in Beitr. Paleeont. Oesterreich-Ungarns, VIII, [407], 1890 
(sep., p. 21). 
Based on a portion of a lower jaw, described by Filhol as Herpestes erassus (Arch. 
Mus. Hist. Nat. Lyon, 63, 1881), from the Upper Miocene of Grive St. Alban, 
Dépt. Isére, France. 
Extinct. 
Hypopleurus: 676, under; zAevpd, side. 
Hyporyssus Powrr, 1848. Insectivora, Talpidze. 
Archiv. Sci. Phys. et Nat., Bibl. Univ. Genéve, IX, 161, 247, Oct., 1848. 
Type: Huyporyssus telluris Pomel, from the Miocene of Auvergne, France. 
Extinct. 
Hyporyssus: 676, under; (v66ds=/v60s, drawn up, wrinkled. 
Hypotemnodon Eyrrman, 1894. Ferz, Canide. 
Am. Geologist, XIV, No. 5, p. 321, Nov., 1894; Hay, Science, new ser., X, 253, 
Aug. 25, 1899. 
Type: Temnocyon coryphzus Cope, from the Miocene of John Day River, Oregon. 
Name antedated by Mesocyon Scott, 1890. 
Extinct. Based on a left ramus. 
Hypotemnodon: 626, under; Téuv@, to cut; 66@v=d6o0vs, tooth—in allusion to 
the inferior sectorlal tooth. 
Hypparion (see Hipparion). Ungulata, Perissodactyla, Equide. 
Hypposhyus (see Hipposyus). Primates, Notharctidee ? 
Hypsicebus Lesson, 1840. Primates, Tarsiidee. 
Species Mamm., 207, 253-254, 1840; Nouv. Tableau Régne Animal, Mamm., 11, 
1842. 
Type: Tarsius bancanus Horsfield, from the vicinity of Jeboos, island of Banca, 
East Indies. Name antedated by Tarsius Storr, 1780. 
Hypsicebus: vbi, on high, aloft; Kos, a long-tailed monkey. 
Hypsignathus H. Auten, 1861. : Chiroptera, Pteropodide. 
Proc. Acad. Nat. Sci. Phila., 1861, 156-158; MarscnurE, Fledermáuse Berliner 
Mus. Naturkunde, Lief. 1, Megachiroptera, 42, 1899. 
