676 INDEX GENERUM MAMMALIUM. 
Thoracotherium Mercerat, 1891. Kdentata, Dasypodidee. 
Revista Mus. La Plata, II, 42-46, 1891. 
Species, 6: Thoracotherium priscum Mercerat, Eutatus anophorum Ameghino, 
Thoracotherium vetum Mercerat, Eutatus lagena Ameghino, F. distans Ameghino, 
and Thoracotherium cruentum Mercerat, from the Eocene of Patagonia. 
Name antedated by Proeutatus Ameghino, Aug., 1891. 
Extinct. x 
"TT horacotherium: 0cpa&, G@pakos, breastplate; 67p£ov, wild beast—in allusion to 
the carapace. 
Thos (subgenus of Canis) OKEN, 1816. Ferze, Canidee. 
Lehrbuch Naturgesch., 3ter Theil, Zool., 2te Abth., 1037-1039, 1816; ALLEN, 
Bull. Am. Mus. Nat. Hist., N. Y., X VI, 377, Oct. 11, 1902 (name revived). 
Species, 4: Canis ceylonensis, from Ceylon; C. mesomelas, from Africa; C. barbarus, 
from Barbary; and Thos vulgaris (=C. aureus), from Asia and Africa. 
Thos: 6coc, §@0s, a beast of prey like a wolf, probably the jackal. 
Thous (subgenus of Chaon) H. Surrg, 1839. Feri, Canide. 
Jardine's Naturalist’s Library, Mamm., IX, 193-205, 1839; 2d ed., Mamm., I, 
152, 1858; IV, 193-205, pls. 11-14, 1866; V, 289, 1865. 
Species, 6: Canis anthus Cuvier, C. variegatus Rüppell, C. mesomelas auct., T'hous 
senegalensis Cuvier, T. tokla H. Smith, and 7. aemon H. Smith, from Africa 
and southwestern Asia. 
Thous Gray, 1868. Feree, Canid:e. 
Proc. Zool. Soc. London, 1868, 514; Cat. Carn., Pachyderm., & Edentate Mamm. 
Brit. Mus., 201, 1869. 
Species: Canis cancrivorus Desmarest, from French Guiana; and Vulpes fulvipes 
Martin, from the island of Chiloe, Chile. 
Name preoccupied by Thous H. Smith, 1839, a genus of Old World Canid:e, 
several of the species of which are placed by Gray in Lupus and Vulpes... 
Thrichomys (subgenus of Echimys) TRovEssART, 1881.* Glires, Octodontidee. 
Cat. Mamm. Viv. et Foss., Rodentia, in Bull. Soc. d' Etudes Sci. d'Angers, X, 2° 
fasc., 179, 1881; Tnuowas, Proc. Zool. Soc. London, for 1896, 1025, Apr., 1897 
(raised to generic rank ). 
T hricomys 'TRovEssanT, Cat. Mamm., new ed., fasc. rrr, 606, 1897 (misprint). 
Species, 3: Thrichomys antricola (Lund), T. inermis (Pictet), and 7. brevicauda 
(Günther), from South America. 
Thrichomys: 0pí&, rpiyós, hair; 40s, mouse. 
Thrinacodus GüNTHER, 1879. Glires, Octodontid:e. 
Proc. Zool. Soc. London, 1879, 144-145, pl. x, 2 figs. in text. 
Type: Thrinacodus albicauda Günther, from Medellin, Antioquia, Colombia. 
Thrinacodus: §pivaé, Gpitvakos, trident; ó80vs, tooth—from the fork-shaped 
enamel folds of the two anterior upper molars. 
Thylacinus (see Thylacynus). Marsupialia, Dasyuridee. 
Thryonomys Firzincer, 1867. Glires, Octodontid:e. 
Sitzungsber. Math.-Nat. Cl. K. Akad. Wiss., Wien, LVI, 141, 1867; W. L. SCLATER, 
Fauna 8. Africa, Mamm., II, 86-88, figs. 109-110, 1901. 
Type: Aulacodus semipalmatus Heuglin, from the Djur and Kosanga rivers, Central 
Africa. 
Thryonomys: 0pbov, a rush; “os, mouse—from the animal's habit of living in 
thick jungle grass and reed beds. 
Thylacis IruiGEeR, 1811. Marsupialia, Peramelidee. 
Prodromus Syst. Mamm. et Avium, 76, 1811; THomas, Cat. Marsup. & Mono- 
trem. Brit. Mus., 227, 1888 (type fixed). 
Thylax OkEN, Lehrbuch Naturgesch., 3ter Theil, Zool., 2te Abth., pp. xi, 1128- 
1150, 1816. à 


* Date given as ‘1880’ (without reference) by TnovzssaAnr, Cat. Mamm., new ed., 
fasc., 111, 606, 1897. 
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