HYPSIGNATHUS—HYRACODON. 343 
Hypsignathus—Continued. 
Type: Hypsignathus monstrosus H. Allen (= Pteropus haldemani Hallowell), from 
West Africa. 
Hypsignathus: Ot, on high, aloft; »»«&6os, jaw—possibly in allusion to the 
‘deeply arched mouth.’ 
Hypsiprymnodon Ramsay, 1876. Marsupialia, Macropodid:e. 
Proc. Linn. Soc. New South Wales, I, pt. 1, 33-35, 1876; THomas, Cat. Marsup. 
& Monotrem. Brit. Mus., 123-124, 1888. 
Type: Hypsiprymnodon moschatus Ramsey, from the Rockingham Bay district, 
Queensland. 
Hypsiprymnodon: THypsiprymnus; d50v = 0800s, tooth. 
Hypsiprymnopsis Dawkins, 1864. Allotheria, Plagiaulacid:e. 
Quart Journ. Geol. Soc. London, X X, pt. rv, No. 80, pp. 409-411, fig. 3 in text, 
Nov. 1, 1864. 
Type: Hypsiprymnopsis rheticus Dawkins, from the Triassic gray marls of the 
Rhietic beds on the seashore west of Watchet, Somersetshire, England. 
Extinct. Based on a premolar. 
Hypsiprymnopsis: Hypsiprymnus; 61s, appearance. 
Hypsiprymnus I[.iicer, 1811. Marsupialia, Macropodid:e. 
Prodromus Syst. Mamm. et Avium, 79, 1811; Tuowas, Cat. Marsup. & Mono- 
trem. Brit. Mus., 116, 1888 (in synonymy ). 
Type: Didelphis potoru Meyer (= Didelphis tridactyla Kerr), from southern Aus- 
tralia. 
Hypsiprymnus: bpixpvyev os, with high stern, i. e., high behind—in allusion to 
the disproportionate development of the thighs and hind legs. 
Hypsugo (subgenus of Vesperugo) KorENATI, 1856. Chiroptera, Vespertilionid:e. 
Allgem. Deutsch. Naturhist. Zeitg., Dresden, neue Folge, II, 131, 167-169, 1856. 
Species: Vesperugo maurus Blasius, and V. krascheninikowii Eversmann, from 
Europe. 
Hypsugo: Ovi, on high, aloft; + ending —ugo. (Formed in analogy with Nannugo 
and Vesperugo.) 2 
Hypudaeus IrrvicEn, 1811. Glires, Murid:e, Microtinze. 
Prodromus Syst. Mamm. et. Avium, 87-88, 1811; MinrLER, N. Am. Fauna, No. 
12, pp. 14-15, July 23, 1896. 
Species, 3: Mus lemmus, M. amphibius (— M. terrestris), and M. arvalis, from 
Europe. 
Hypudaeus: oz00aoc, subterranean—from the animals’ mode of life; but some 
of the species are said to live in hollow, decayed trees and among roots, as 
well as in burrows. 
Hyrachyus Lxipv, 1871. Ungulata, E H yracodontid:e. 
Rept. U. 8. Geol. Surv. Wyoming, for 1870, 557, 1871; Proc. Acad. Nat. Sci. Phila., 
Nov. 28, 1871, 229; Hav, Cat. Foss. Vert. N. Am., Ede 179, U. S. Geol. Surv., 
658, 1902 (type fixed). 
Species: Hyrachyus agrestis Leidy, from the Eocene of Blacks Fork of Green 
River; and H. agrarius Leidy (type), from the Eocene of Smith Fork of 
Green River, Wyoming. 
Extinct. Each species is based on the fragment of a lower jaw. 
Hyrachyus: Hyrax; 0c, 66s, hog—i. e. a hog-like Hyrax. 
Hyracodon Lerripy, 1856. Ungulata, Perissodactyla, Hyracodontide. 
Proc. Acad. Nat. Sci. Phila., 1856, 91-92. 
Type: Rhinoceros nebrascensis Leidy, from the Oligocene of South Dakota? 
Extinct. 
Hyracodon: Hyrax; 65@v=660vs, tooth. 
