TRICHECODON—TRICIUM. 689 
Trichecodon—Continued. 
Type: Trichecodon huxleyi Lankester, from the Red Crag of Sutton, Felixstow, 
and Bawdsey, England. 
Extinct. Based on portions of several tusks. 
Trichecodon: Trichechus; 65@v=66 ovs, tooth. 
Trichocoryes (subg. of Centurio) H. ALLEN, 1861. Chiroptera, Phyllostomatid:e, 
Proc. Acad. Nat. Sci. Phila., 1861, 359-360. 
Trichocorytes GRAY, Proc. Zool. Soc. London, 1866, 118 (raised to generic rank). 
Trichocoryctes TROUESSART, Cat. Mamm., new ed., I, 164, 1897 (in synonymy). 
Type: Centurio memurtrii H. Allen, from Mirador, Vera Cruz, Mexico. 
Trichocoryes: 0pí&, rpiyoc, hair; «ópvsc, x«ópv0oc, helmet—in allusion to the last 
fold of skin or throat band, developed into ‘‘a large hairy mask, which, when 
elevated, hides the face. . . . The entire arrangement might with propriety 
be compared to an ancient vizor surmounted with rosettes." (ALLEN. ) 
Tricholeptus (see Ticholeptus). Ungulata, Artiodactyla, Agriochceride. 
Trichomanis Husrecut, 1891. Fer:w, Mustelidee. 
Notes from Leyden Museum, XIII, 241-242, Sept., 1891; Nature, XLIV, 468, 
Sept.,1891. 
Type: Trichomanis hoevenii Hubrecht, from the mountains between Palembang 
and Bencoolen, Sumatra (type lost). 
Described as an. Edentate, but afterwards shown to be identical with Arctonyx 
collaris (Proc. Zool. Soc. London, 1895, 522). 
Trichomanis: §pt2, rpiyóc, hair; -- Manis. Selected, not with a view of indi- 
cating any closer anatomical relation with the genus Manis, but only to indicate 
that a hairy anteater is meant." (HusBreEcur. ) 
Trichosurus (subg. of Phalangista) Lesson, 1828. Marsupialia, Phalangeridee. 
Dict. Class. Hist. Nat., XIII, 333-335, Jan., 1828; Comp. (Euvres Buffon, IV, 
464, 1830; Nouv. Tableau Régne Animal, Mamm., 189, 1842 (raised to generic 
rank); THomas, Cat. Marsup. & Monotrem. Brit. Mus., 184, 1888 (type fixed). 
Trichurus WAGNER, Suppl. Schreber’s Sáugthiere, III, 74-83, 1843; V, 269, 1855 
(preoccupied ). 
Species, 3: Phalangista nana Desmarest, from Maria Island, Tasmania; P. cookii 
Desmarest, from Tasmania; and P. vulpina Shaw (= Didelphis vulpecula Kerr, 
type), from Australia. 
Trichosurus: tpixoors, hairy; ovp«, tail—‘brush-tailed opossum.’ 
Trichurus (subg. of Phalangista) WAGNER, 1843. Marsupialia, Phalangeride. 
Suppl. Schreber’s Saiugthiere, III, 74-83, 1843; V, 269, 1855. 
^ Emendation of Trichosurus Lesson, 1828. Name preoccupied by Trichuris Roede- 
rer, 1761, a genus of Vermes; and by Trichura Hübner, 1816, a genus of 
Lepidoptera. 
Trichurus: from 6pt&, rpixóc, hair; ovp, tail—‘brush-tailed opossum.’ 
Trichys GinrueEr, 1876. Glires, Hystricidee. 
Proc. Zool. Soc. London, 1876, 739, pl. Lxx1, figs. 2, 2a in text. 
Type: Trichys lipura Günther, from Borneo. 
Trichys: 0pí&, rpiyós, hair; Us, hog—in allusion to the flat flexible bristles which 
cover the upper part of the body. (Compare Hystrix.) 
Tricium Corr, 1873. Glires, Leporid:e. 
Paleont. Bull., No. 16, pp. 4-5, Aug. 20, 1873; Ann. Rept. U. S. Geol. & Geog, 
, Surv. Terr., VII, for 1873, 478, 1874 (synonym); Hay, Cat. Foss. Vert. N. Am., 
' Bull. 179, U. S. Geol. Surv., 735, 1902 (type fixed). 
Species, 3: T'ricium avunculus Cope (type), T. leporinum Cope, and T. paniense 
Cope, from the Oligocene of Colorado. 
Extinct. 
Tricium: rpi-, three; Kiwyv, pillar—in allusion to the three lobes or columns of 
the first and second deciduous molars. 
7591—-No. 23—08 44 

