938 INDEX GENERUM MAMMALIUM. 
Diplopus Kowatevsky, 1873. Ungulata, Artiodactyla, Anoplotheriid:e. 
Proc. Roy. Soc. London, XXI, No. 142, p. 149, 1873; Phil. Trans. Roy. Soc. Lon- 
don, 163, pt. 1, 30, pls. xxxv figs. 1, 3-5, xxxvi figs. 1, 4, 7, xxxvi figs. 3, 4, 
6, 11, 12, 1874. 
Type: Diplopus aymardi Kowalevsky, from the Eocene of Hordwell, Hampshire, 
England. : 
Extinct. Based on ‘‘a number of well-preserved long bones . . . some meta- 
carpals and metatarsals, as well as a well-preserved tarsus." 
Diplopus: ó11À60s, double; zovs, foot—in allusion to the two toes on each foot. 
Diplostoma Rarinesque, 1817. Glires, Geom yidze. 
Am. Monthly Mag., II, No. 1, pp. 44-45, 1817. 
Species: Diplostoma fusca Rafinesque ( — Mus bursarius Shaw), and D. alba Rafi- 
nesque, from the Missouri River region. 
Diplostoma: 617A60s, double; é6róua, mouth—on account of the external cheek 
pouches. 
Diplotherium JourpAn, 1852. Fere, Mustelid:e. 
* Revue Sociétés Savantes, 1852" (nomen nudum) (fide Frtgor, Archiv. Mus. 
Hist. Nat. Lyon, III, 64, 67, pl. rv, figs. 12, 15, 1881, under Plesictis mutatus). 
Type: from the Miocene of Grive-Saint-Alban, Dépt. de l'Isére, France. Species 
not named by Jourdan, but called Plesictis mutatus by Filhol in 1881. 
Extinct. Based on portions of two lower jaws. 
Diplotherium: 811ÀAó60c, double; Gnpiov, wild beast. 
Diplotremus AmeGuino, 1889. Ungulata, Artiodactyla, ts 
Cont. Conocimiento Mamíf. Fósil. Repub. Argentina, in Act. Acad. Nac. Cien., 
Córdoba, VI, 577-578, pl. xxxiv, fig. 16, 1889. 
Type: Diplotremus agrestis Ameghino, from the Pampean formation (Pliocene), 
of Bahía Blanca, Argentina. 
Extinet. ‘‘Conocido por una parte considerable del maxilar superior izquierdo 
con gran parte del paladar, y cuatro muelas." 
Diplotremus: ó11À00c, double; rpru«, foramen—in allusion to the upper pre- 
molars, **cada uno con dos pozos de esmalte semi-lunares en la superficie 
masticatoria de la corona." | (AwEGHINO.) 
Dipodamys (see Dipodomys). Glires, Heteromyidee. 
Dipodillus (subgenus of Gerbillus) LarAsTrE, 1881. Glires, Muride, Gerbilline. 
Le Naturaliste, Paris, I, No. 64, p. 506, Nov. 15, 1881; II, No. 2, p. 12, Jan. 15, 
1882; No. 16, p. 127, Aug. 15, 1882. 
Type: Gerbillus simoni Lataste, from Oued Magra (between M'sila and Barika, 
north of Chott du Hodna), northern Algeria. 
Dipodillus: dim. of Dipus. 
Dipodomys Gray, 1841. Glires, Heteromyide. 
Ann. & Mag. Nat. Hist., VII, 521-522, Aug., 1841; Merriam, Proc. Biol. Soc. 
Wash., VIII, 83-96, 1893. 
Dipodamys AGasstz, Nomenclator Zool., Mamm., 10, 1842; Index. Univ., 126, 
1846 (misprint). 
Type: Dipodomys philippii Gray, from Real del Monte, about 50 miles northeast 
of the City of Mexico, Mexico. 
Dipodomys: ótzovsc, two-footed; “0s, mouse—from the long hind legs, which 
give the animal the appearance of being two-footed. 
Dipodops Merriam, 1890. Glires, Heteromyide. 
N. Am. Fauna, No. 3, p. 72, Sept. 4, 1890. 
Type: Mipodomys agilis Gambel, from Los Angeles, California. 
Name antedated by Perodipus Fitzinger, 1867. 
Dipodops: dimovs, two-footed; 6, aspect—from its resemblance to Dipodomys. 
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