TEONOPUS——TETRACL/ENODON. 669 
Teonopus. (See Teanopus.) Glires, Murid:e, Neotominee. 
Terpone Gray, 1871.* Ungulata, Artiodactyla, Bovide. 
Proc. Zool. Soc. London, 1871, 592-593; SctarER & THomas, Book of Antelopes, 
I, pt. m1, 121, 126, May, 1895 (in synonymy). 
Terphone Gray, Cat. Ruminant Mamm. Brit. Mus., 24—25, 1872. 
Type: Cephalophus longiceps Gray (=Antilope silvicultrix Afzelius), from the 
Gaboon, West Africa. 
Terricola (subgenus of Arvicola) Fario, 1867. Glires, Murid:e, Microtine. 
Campagnols Bassin du Léman, Ass. Zool. Léman, 73, 75, 1867; Mituer, N. Am. 
Fauna, No. 12, pp. 17, 58, July 23, 1896 (in synonymy ). 
Species: Arvicola subterraneus Sélys, and A. savii Sélys, from Europe. 
Name preoccupied by Terricola Fleming, 1828, a genus of Mollusca. 
Terricola: Lat., a dweller upon land (from terra, land; colo, to dwell). 
Tetheopsis Corr, 1885. Ungulata, Amblypoda, Uintatheriidze. 
Am. Naturalist, XIX, No. 6, p. 594, June, 1885. 
Type: Tinoceras stenops Marsh, from the Eocene of Haystack Mountain, Sweet- 
water County, Wyoming. 
Extinct. Based on a skull with lower jaw. 
Tetheopsis: thy, grandmother; ys, appearance—possibly in allusion to the 
absence of lower canines and incisors. 
Tetrabelodon Corr, 1884. Ungulata, Proboscidea, Elephantid:e. 
Proc. Am. Philos. Soc., X XII, pt. 1, for Jan., 1885, 4-5, Oct. 21, 1884. 
Type: Mastodon angustidens Cuvier, from the Miocene of Europe. (See Gampho- 
therium Gloger, 1841.) 
Extinct. 
Tetrabelodon: tetpa-, four; PéAos, dart; 66@v=ddo0vs, tooth—in allusion to 
the presence of both upper and lower incisors in the male, in contrast with 
Mastodon, in which the lower incisors are wanting. (Compare Dibelodon.) 
Tetracaulodon Gopwaw, 1830. Ungulata, Proboscidea, Elephantid:e. 
Trans. Am. Philos. Soc., new ser., III, 478-485, pls. xvrr-xvirr, 1830; Hays, 
ibid., IV, 317-339, pl. xxix, 1834; KocnH, Proc. Geol. Soc. London, III, 
No. 88, pp. 714-716, 1842. 
Type: Tetracaulodon mastodontoideum Godman, found about 12 miles from New- 
burgh, Orange County, New York. 
Extinct. Based on ‘parts of the frontal, intermaxillary, superior maxillary 
and two-thirds of the lower jaw bones; the tusks; and sixteen teeth.’ 
Tetracaulodon: retpa-, four; KavAds, stem; 66@v=ddo0vs, tooth (yavdAiddar, 
tusk). 
Tetracerus Lracnu, 1825. Ungulata, Artiodactyla, Bovidee. 
Trans. Linn. Soc. London, XIV, pt. m1, 524, 1825; H. SwrrH, in Griffith's 
Cuvier, Animal Kingdom, IV, 253-257, 1 plate, 1825; V, 343-344, 1827; 
BraNronp, Fauna Brit. India, Mamm., 519-521, 1888-91. 
Tetraceros Vorar, Cuvier's Thierreich, I, 314-315, 1831; Scr4ATrER & THomas, 
Book of Antelopes, I, pt. 1v, 215-220, pl. xxiv, Sept., 1895. 
Type: (Antilope chickara Hardwicke) = A. quadricornis Blainville, from India. 
Tetracerus: rerpa-, four; «épasc, horn—the four-horned antelope. 
Tetraclseenodon Scorr, 1892. Ungulata, Condylarthra, Phenacodontide. 
Proc. Acad. Nat. Sci. Phila., Nov. 15, 1892, 299-300; Marrnew, Bull. Am. Mus. 
Nat. Hist. N. Y., IX, 308-305, 1897 (synonym of Huprotogonia); ibid., XII, 29 
footnote, Apr. 8 , 1899, Hay, Science, new ser., IX, 593, Apr. 21, 1899. 
* Erroneously credited to es *1853,’ m C. O. WATERHOUSE, Inde Zool., 369, 1902. 

