940 INDEX GENERUM MAMMALIUM. 
Diprotroglodytes—Continued. 
Hypothetical genus, ‘‘segundo antecesor comün del gorilla y del chimpancé.”’ 
Diprotroglodytes: 01-, two; mp@ros, first; + Troglodytes. 
Dipsus (see Dipus). Glires, Dipodidee. 
Dipterocetus Giocer, 1841. Cete, Physeteridze? 
Hand- u. Hilfsbuch Naturgesch., I, pp. xxxiv, 170, 1841; THomas,- Ann. & Mag. 
Nat. Hist., 6th ser., XV, 191, Feb. 1, 1895. 
New name for Oxvyplerus Rafinesque, 1814. The genus includes Dipterocetus imon- 
gitori, from the Mediterranean Sea, and JD. rhinoceros, from the Pacific Ocean. 
Dipterocetus: dimtepos, two-winged, i. e., ‘two finned’; K7ros, whale—*' Ein 
noch wenig bekannte, den gewóhnlichen Delphinen iihnliche Walart des 
Mittelmeeres . . . soll zwei Rückenflossen besitzen." (GLOGER. ) 
Dipus ZimMERMANN, 1780. Glires, Dipodidee. 
9r 
Geog. Geschichte Menschen und vierfüss. Thiere, II, 358, 1780; SCHREBER, 
Siiugthiere, pls. coxxvin—ccoxxxu, 1782; ibid., IV, 842-861, 1788-89; BoppAERT, 
Elenchus Animalium, I, 47, 1785; GwELIN, Linn:eus? Systema Nature, ed. 13, 
I, 157-160, 1788; Bnaxpr, Bull. Phys. Math. Acad. Sci. St. Pétersbourg, II, 
217, 1844. 
Dipsus Gray, London Med. Repos., XV, 303, Apr. 1, 1821 (misprint). 
Species, 6: Dipus jaculus, D. sagitta, Yerbua capensis (= Mus cafer), Dipus longipes, 
and D. tamaricinus, from Asia and Africa; and D. hudsonius, from Hudson Bay. 
Dipus: óíiz ovs, two-footed—in allusion to the long hind legs, and the mode of 
progression by great leaps, like the kangaroo. 
Discolomys AwxkaniNo, 1889. Glires, Octodontid:e. 
Cont. Conocimiento Mamíf. Fósil. Repüb. Argentina, in Act. Acad. Nac. Cien., 
Córdoba, VI, 148-149, 902, pls. vr figs. 17, 23, xxv fig. 8, 1889. 
Type: Discolomys cuneus Ameghino, from the Patagonian formation (Oligocene), 
of the barrancas in the vicinity of the city of Paraná, Argentina. 
Extinet. *'Fundada sobre la primera muela superior del lado derecho." 
Discolomys: Contraction of 6i6Kos, disk; Ao&ós, oblique; “0s, mouse (AME- 
GHINO)—in allusion to the transverse enamel plates of the upper molars. 
Disopes (see Dysopes). Chiroptera, Noctilionid:e. 
Dissacus Corr, 1881. Creodonta, Mesonychidee. 
Am. Naturalist, XV (for Dec.), 1018-1019, Nov. 29, 1881; Tert. Vert., 344, 1885 
(date of publication). 
Type: Mesonyx navajovius Cope, from the Eocene of northwestern New Mexico. 
Extinct. 
Dissacus: 51660s, double; dà», point—from the double cusps of the last two 
molars, in contrast with the simple cusps of Mesonyx. 
Distoechurus (subg. of Phalangista) PETERS, 1874. Marsupialia, Phalangerid:e. 
Ann. Mus. Civ. Stor. Nat., Genova, VI, 303, 1874. 
Distechurus THomas, Cat. Marsup. & Monotrem. Brit. Mus., 139, 1888 (raised to 
generic rank). 
Type: Phalangista ( Distoechurus) pennata Peters, from Andai, New Guinea. 
Distoechurus: 6i6r01yxos, in two rows: oOp«, tail—in allusion to the arrangement 
of the long hairs of the tail in two opposite lateral rows like the vanes of a 
feather. 
Distomus (see Dystomus). Sirenia, y 
Distylophorus AwEanurNo, 1902. Ungulata, Condylarthra, Phenacodontid:e. 
Bol. Acad. Nac. Cien. Córdoba, X VII, 19, May, 1902 (sep. p. 17). 
New name for 5tilophorus Roth, 1901, which is preoccupied by Stylephorus Shaw, 
1791, a genus of Pisces; by Stylophora Desvoidy, 1830, a genus of Diptera; and 
by Stylophorus Hesse, 1870, a genus of Crustacea. 
