236 INDEX GENERUM MAMMALIUM. 
Dioplotherium Corr, 1883. Sirenia, Halitheriide. 
Am. Naturalist, X VII, 309, Mar., 1883; Proc. Acad. Nat. Sci. Phila., Mar. 27, 
1883, 52-54. 
Type: Dioplotherium manigaulti Cope, from the Miocene beds of the Wando River, 
northeast of Charleston, South Carolina. 
Extinct. 3 
Dioplotherium: 81-, two; OwAov, weapon; 0npíov, wild beast—in allusion to the 
two incisors. 
Dioplum Rarinesque, 1815. Ungulata, Artiodactyla, Anoplotheriid:e. 
Analyse de la Nature, 55, 1815. 
Type: ‘‘Anoplotherium sp. Cuv." 
Dioplum: 61-, two; órÀov, weapon. 
Diorotherium AmEGHINO, 1891. Ungulata, Ancylopoda, Homalodontotheriid:e. 
Nuevos Restos Mamif. Fés. Patagonia Austral, 10, Aug., 1891; Revista Argentina 
Hist. Nat., I; entr. 5a, 296, Oct. 1, 1891. 
Type: Diorotherium egregium Ameghino, from the Lower Eocene of southern 
Patagonia. 
Extinct. 
Diorotherium: diopos, divider; 0ypiov, wild beast—possibly in allusion to the 
diastema between the upper premolar and canine. 
Diphylla $rix, 1823. Chiroptera, Phyllostomatidee. 
Sim. et Vespert. Brasil. Nov. Spec., 68, tab. xxxv1, fig. 7, 1823. 
Diphydia, Gray, Philos. Mag., new ser., VI, 29, July, 1829; AGasstz, Nomen- 
clator Zool., Mamm., Addenda, 4, 1846. 
Type: Diphylla ecaudata Spix, from Brazil, exact locality not stated. 
Name preoccupied (?) by Diphyllis Oken, 1817, a genus of Mollusca. 
Diphylla: 81-, two; @vAAor, leaf—tfrom the ‘bifoliate’ nose-leaf. 
Dipilus Amecuino, 1890. Marsupialia, Epanorthidee. 
Bol. Inst. Geog. Argentino, XI, cuad. vrr-1x, 153-155, 175, 187, figs. 5-6, July- 
Sept., 1890. 
Species: Dipilus spegazzinii Ameghino, and D. bergii Ameghino, from the Lower 
Eocene of southern Patagonia. 
Extinet. i 
Dipilus: Aeiz1ÀAvs (or more properly 4nizvAos), Deipylus, a Greek proper name. 
( AMEGHINO. ) 
Diplacodon Marsn, 1875. Ungulata, Perissodactyla, Titanotheriidze. 
Am. Journ. Sci. & Arts, 3d ser., IX, 246-247, Mar., 1875; OsBoRN, Trans. Am. 
Philos. Soc., new ser., XVI, pt. 111, 512-518, diag. 4, pls. vii, rx, Aug. 20, 1889. 
Type: Diplacodon elatus Marsh, from the Upper Eocene of Utah. 
Extinet. 
Diplacodon: ó11Aó60sc, double; d?) point; 65@v=ddovs, tooth—in allusion to 
**the last upper premolar which has two distinct inner cones." (Marsn. ) 
Diplobune (subg. of Dichobune) RérIMEYER, 1862. Ungulata, Anoplotheriidee. 
Neue Denkschrift. Schweiz. Gesell. gesammt. Naturw., Zürich, XIX, 74, tab. v, 
figs. 75, 76, 81, 1862 (provisional name). 
Species: Dichobune mülleri Rütimeyer, and Dichobune 
near Solothurn, Switzerland. 
Extinct. 
Diplobune: 612X605, double; 'ovvóc, mound—in allusion to the two anterior 
inner cusps of the lower molars. 
?, from Egerkingen, 

