672 INDEX GENERUM MAMMALIUM. 
Thalassictis—Continued. 
Type: Thalassictis robusta Nordmann, from Bessarabia, southern Russia. 
Extinct. 
Thalassictis: ü&AcGGa, sea; irc, weasel. 
Thaphozous (see Taphozous ). Chiroptera, Noctilionide. 
Thaumastolemur FirLuor, 1895. Primates, Lemurid:e. 
Bull. Mus. Hist. Nat., Paris, No. 1, p. 13, Feb., 1895; Carus, Zool. Anzeiger, XVIII. 
No. 480, p. 240, July 22, 1895. 
Type: Thaumastolemur grandidieri Filhol, from the Pleistocene of Ambolisatra, 
Madagascar. 
Extinct. Based on the lower extremity of a humerus. 
Thaumastolemur: 6cvuaGrós, wonderful, extraordinary; + Lemur. 
Thaumatherium GrLocGER, 1841. Ungulata, Artiodactyla, Giraffid:. 
Hand- u. Hilfsbuch Naturgesch., I, 138, 1841; Tuomas, Ann. & Mag. Nat. Hist., 
6th ser., XV, 191, Feb. 1, 1895. 
New name for the ‘ill-chosen’ Sivatheriwm of Falconer & Cautley, 1835. 
Extinct. 
Thaumatherium: Gaba, wonder, marvel; §ypiorv, wild beast. 
Thaumatognathus (see Taumastognathus). Ungulata, Anthracotheriide. 
Theocodus (see Phenacodus). Ungulata, Condylarthra, Phenacodontide. 
Theosodon AMEGHINO, 1887. Ungulata, Litopterna, Macraucheniide. 
Enum. Sist. Especies Mamif. Fós. Patagonia Austral, p. 19, Dec., 1887; Revista 
Argentina Hist. Nat., I, entr. 5, 294—295, Oct. 1, 1891. 
Type: Theosodon lydekkeri Ameghino, from the Eocene of southern Patagonia. 
Extinct. 
Theosodon: ‘‘Géos, fortune" (AMEGHINO); 66@v=d6o0Vs, tooth. 
Theranthropus* Brookes, 1828. Primates, Simiidee. 
“Cat. Anat. and Zool. Museum of Joshua Brookes, London, 28, 1828" (previous 
to July 14). 
Type: Theranthropus niger (= Troglodytes niger Geoffroy), from West Africa. 
Name antedated by Troglodytes Geoffroy, 1812 (preoccupied); by Pan Oken, 1816; 
and by Mimetes Leach 1820 (preoccupied) . 
Theranthropus: §np, wild beast; av§pcmos, man. 
Thereutherium FiLuor, 1876. Creodonta, Hyzenodontidee. 
Comptes Rendus, Paris, LXX XII, No. 4, p. 289, Jan.-July, 1876; Ann. Sci. 
Géol., Paris, VIII, 2-7, pl. 1 figs. 189-196, 1877. 
Type: Thereutherium thylacodes Filhol, from the Phosphorites of Quercy, at Cay- 
lux, near Saint- Antonin, Dépt. Tarn-et-Garonne, France. 
Extinct. Based on ‘toute la face avec le maxillaire inférieur en place et toutes 
les dents.’ 
Thereutherium: §npevo, to hunt; 605ptiov, wild beast—i. e., an extinct carnivo- 
rous beast. 
Theridomys JourDAN, 1837. Glires, Theridomyidee. 
Comptes Rendus, Paris, V, No. 13, pp. 483-484, July-Dec., 1837; Ann. Sci. Nat., 
Paris, 2° sér., VIII, Zool., 127-128, Aug., 1837. 
Type (species not given), based on ‘‘quelques débris provenant du Cantal, et . . . 
plusieurs máchoires [recueillies] dans les ealcaires d'eau douce de Ronzon prés 
le Puy-en-Velay et dans ceux de Perrier prés d'Issoire," southern France. 
Extinct. 
Theridomys: 65:01810v. (dim. of 67píov), a little animal; 4s, mouse. 
Theridosorex JourDAN, 1859. Insectivora, Tupaiid:e? 
'* Musée de Lyon"! (fide Gervais, Zool. et Paléont. Frangaises, 2° éd., 55, 1859). 

* This name is open to question, as it was published in a sale catalogue. 
