THERIDOSOREX— — THINOH Y US. 673 
Theridosorex—Continued. 
Theridosorex seems to be a manuscript name. It occurs only as a synonym of 
Plesiosorex Pomel, 1848, which is based on Erinaceus soricinoides Blainville, from 
the Miocene of Issoire, Auvergne, France. 
Extinct. 
Theridosorex: 05píóiov, a little animal; --Sorer. 
Theriodesmus SEELEY, 1887. Allotheria ? 
Proc. Roy. Soc. London, XLIII, No. 260, p. 172, 1887 (read Nov. 24); Philos. 
Trans. Roy. Soc. London, vol. 1795, for 1888, 141-155, pl. 26, 1889; Proc. 4th 
Int. Congress Zool., 68, 1899 (regarded as a reptile). 
Type: Theriodesmus phylarchus Seeley, from the Triassic of Klipfontein, Fraser- 
berg, Cape Colony. 
Extinet. Based on 'a slab showing impressions of the forelimb and some other 
bones of the skeleton.’ 
Theriodesmus: 9nptoyv, wild beast; 0s640s, bond—in allusion to its reptilian 
eharacters, which indicate an animal forming a connecting link between 
reptiles and mammals. 
Theriodictis MERcERAT, 1891. Creodonta, ? 
Revista Mus. La Plata, II, 55-56, 1891. 
Type: Theriodictis platensis Mercerat, from the ‘‘ base del Pampeano, Mar del 
Plata," Argentina. . 
Extinct. 
Theriodictis: Onpi@dns, savage; ikr1c, weasel. 
Theropithecus I. Grorrroy, 1843.* Primates, Cercopithecide. 
Archiv. Mus. Hist. Nat. Paris, II, for 1841, 576-578, 1843; Cat. Méth. Mamm. 
Mus. Hist. Nat., Paris, 10, 32, 1851; DaAnrB2ow, Zoologiska Studier, I, Andra 
Hiiftet, 114, 128-129, 1857. 
Type: Macacus gelada Rüppell, from Abyssinia. 
Theropithecus: 607p, wild beast; mí05g«os, ape—in allusion to the position of its 
nostrils, which open high up. 
Thinocyon MansH, 1872. Creodonta, Uintacyonid:e. 
Am. Journ. Sci. & Arts, 3d ser., IV, 204-205, Sept., 1872 (sep. issued Aug. 7); 
MarrHEWw, Bull. Am. Mus. Nat. Hist., N. Y., XII, 40, 1899. 
Type: Thinocyon velox Marsh, from the Eocene of Grizzly Buttes, near Fort 
Bridger, Wyoming. 
Extinct. Based on ‘a nearly perfect lower jaw with several teeth.’ 
Thinocyon: 6is, §ivd6s, shore; «ocv, dog—in allusion to its occurrence on the 
margin of an ancient Bridger lake basin. 
Thinohyus Marsn, 1875. ; Ungulata, Artiodactyla, Suid:ze. 
Am. Journ. Sci. & Arts, 3d ser., IX, 248-249, Mar., 1875; Hay, Cat. Foss. Vert. 
N. Am., Bull. 179, U. S. Geol. Surv., 657, 1902 (type fixed). 
Species: Thinohyus lentus Marsh (type), and T. socialis Marsh, from the Miocene 
of the John Day River, Oregon. 
Extinct. 
Thinohyus: 61s, 01vóc, shore; Us, hog—in allusion to its occurrence on the mar- 
gin of the ancient John Day lake basin. 

* This date is on the authority of Geoffroy himself (1. c., 1851, p. 32). "The article 
in which the genus was described evidently appeared subsequent to 1842. (See page 
550, on which Miopithecus is quoted from Comptes Rendus, XV, pp. 720, 1037, 1842; 
and from Dict. Univ. Hist. Nat., IIT, 308, 1842.)  T'heropithecus, although published 
in the same year as Gelada Gray, is entitled to adoption until the priority of the latter 
name is proved beyond question. - 
1591—No. 23—03 43 

