696 INDEX GENERUM MAMMALIUM. 
Tropicolobus— Continued. 
Type: Colobus rufomitratus Peters, from the coast of Zanzibar, East Africa. 
Tropicolobus: rpómic, keel; --Colobus—in allusion to the transverse crest of 
long hair between the ears. 
Tropodon HRarixEsqUE, 1832. ? 
Atlantic Journal, Phila., No. 3, p. 114, autumn of 1832. 
New name suggested for Rhinoceroides Featherstonhaugh, 1831. ‘‘ When this jaw- 
bone was exhibited to a large class, as a great geological discovery . . . I did 
not venture to contradict the assertion . . . but I merely ventured to state 
that if it was a fossil cast of grit-stone, it was a great anomaly, and to :nsinuate 
that whereas there was no proof of the animal having had a nasal horn like 
the rhinoceros, the name intended, did not well apply, and ought to be changed 
into Tropodon, meaning teeth like a keel. This suggestion was not well 
received nor attended to. (RAFINESQUE. ) 
Tropodon: rpómis, keel; 66@v=0d6do0vs, tooth. 
Trouessartella CossMANn, 1899. Marsupialia, Amphitheriid:e. 
CossMAN, in Trouessart’s Cat. Mamm., new ed., fasc. vr, pp. 1433 footnote, 1463, 
June, 1899. 
New name for Trouessartia Cossman, May, 1899, which is preoccupied by Troues- 
sartia Canestrini and Kramer, Jan., 1899, a genus of Arachnida. 
Extinct. 
Trouessartella: In honor of Dr. Edouard Louis Trouessart, of Paris, 1842—; 
author of the ‘Catalogus Mammalium,’ 1897-99, and numerous papers on 
mammals. 
Trouessartia CossMAN, 1899. Marsupialia, Amphitheriid:ze. 
“Revue crit. Paléont., for Apr., p. 30, May, 1899;" TnovuEssaRT, Cat. Mamm ., 
new ed., fasc. vr, p. 1433 footnote, June, 1899. 
New name for Odontostylus Trouessart, 1898, which is preoccupied by Odontostylus 
Gray, 1840, a genus of Mollusca. 
Name preoccupied by Trouessartia Canestrini and Kramer, Jan., 1899,* a genus 
of Arachnida. Replaced by Trouessartella Cossman, June, 1899. 
Extinct. 
Trouessartia: In honor of Dr. Edouard Louis Trouessart. 
Trucifelis (subgenus of Felis) Lempy, 1868. : Fersz, Felidee. 
Proc. Acad. Nat. Sci. Phila., 1868, 175-176; Synop. Ext. Mamm. N. Am., in 
Journ. Acad. Nat. Sci. Phila., 2d ser., VII, 366-367, pl. xxvii figs. 10, 11, 1869 
(raised to generic rank). 
Type: Felis ( Trucifelis) fatalis Leidy, from the Pleistocene of Hardin County, 
Texas. 
Extinct. Based on ‘an upper sectorial molar, contained in a small fragment of 
the jaw, which also includes the socket for a single fanged tubercular tooth.’ 
Trucifelis: Lat. trux, trucis, fierce, ferocious; 4- Felis. 
Trygenycteris LvpEKkKER, 1891. Chiroptera, Pteropodid:e. 
LvDEKKER, in Flower & Lydekker's Mamm., Living & Extinct, 655, 1891. 
New name for Megaloglossus Pagenstecher, 1885, which is said to be preoccupied 
by Megaglossa Rondani, 1865, a genus of Diptera. 
Trygenycleris: rpoy 5, ripe fruit; vvuxrepís, bat—in allusion to the animal's fru- 
givorous habits. 
Tucanus Rarinesque, 1815. Glires, Geomyidee ? 
Analyse de la Nature, 59, 1815 (nomen nudum). 
* Bull. Soc. Etudes Sci. d' Angers, 1898, 59, Jan., 1899; Das Thierreich, Desmodid:e 
und Sarcoptidee, 119, Apr., 1899. 

