374 INDEX GENERUM MAMMALIUM. 
Lestodon —Continued. 
Lestodon:  Àgér?9s, a robber; é5@v = ddovs, tooth—in allusion to the presence 
of **une paire de dents caniniformes qui rappellent celles des Paresseux Unau’’ 
( Bradypus didactylus). (GERVAIS. ) 
Letidomys (see Ictidomys). Glires, Sciuridze. 
Leucas (subgenus of Delphinapterus) BRANDT, 1878. Cete, Delphinide. 
Mém. Acad. Imp. Sci. St. Pétersbourg, 7* sér., X X, 234, 1873. 
Type: Delphinapterus leucas (= Delphinus leucas Pallas), of the north Atlantic and 
Arctic oceans. 
Name antedated by Delphinapterus Lacépéde, 1804; Beluga Gray, 1828; Delphis 
Wagler, 1830; and Argocetus Gloger, 1841, all based on the same species! 
Leucas: Aevicóc, white—from the characteristic color. 
Leucippe PomeEL, 1854. Chiroptera, Vespertilionide. 
Cat. Méth. Vert. Foss. Bassin de la Loire, 10, 1854; TnRovEssanr, Revue et Mag. 
de Zool., 3° sér., VI, 236, 1878; Cat. Mamm. Viv. et Foss., Chiroptera, 76, 1879. 
Type: Leucippe owenii Pomel, from the Tertiary of England. ‘‘C’est probable- 
ment un sous-genre de Vespertilio.? | (PoMEL.) 
Extinct. 
Leucocyon Gray, 1868. Ferze, Canidee. 
Proc. Zool. Soc. London, 1868, 521; Cat. Carn., Pachyderm., & Edentate Mamm. 
3rit. Mus., 208-209, 1869. 
Type: Canis lagopus Linnzeus, from Arctic Eurasia. 
Name antedated by Alopex Kaup, 1829. 
Leucocyon: AevKos, white; «ocv, dog—irom the white winter fur of the adult. 
Leucoaon Fario, 1869. Insectivora, Soricidee. 
Faune Vertébrés de la Suisse, I, Mamm., 132-134, 137-139, pl. v, 1869. 
Type: Leucodon microurus Fatio ( — Sorev leucodon Hermann), from Europe. 
Name antedated by Crocidura Wagler, 1832. 
Leucodon: AevKos, white; óócv —ó807vs, tooth. 
Leucomitra (subgenus of Chincha), HowkELL, 1901. Ferz, Mustelidae 
N. Am. Fauna, No. 20, pp. 39-43, pls. 1v, vin, Aug. 31, 1901. 
Type: Mephitis macroura Lichtenstein, from the mountains northwest of the City 
of Mexico. 
Leucomitra: AXevkos, white; uíroa, hood—trom the elongated hairs on the nape, 
which spread out sidewise, forming a sort of white hood. 
Leuconoe Borg, 1830. Chiroptera, Vespertilionide. 
Oken's Isis, 1830, 256-257. 
Leuconüóe Buastus, Naturgesch. Siugeth. Deutschlands, 95, 1857. 
3ased on ‘die Wasserfledermause’ of Europe, species not mentioned. 
Leucopleurus (subgenus of Lagenorhynchus) Gray, 1866. Cete, Delphinidee. 
Proc. Zool. Soc. London, 1866, 216; Syn. Whales & Dolphins Brit. Mus., 7, 1868 
(raised to generic rank). 
Type: Lagenorhynchus leucopleurus (=Delphinus leucopleurus Rasch), from the 
North Sea. 
Leucopleurus: AevKos, white; zAevpóv, side—in allusion to the oblique, white, 
longitudinal streak on the posterior part of each side. 
Leucorhamphus Lit.sesore, 1861. Cete, Delphinidz. 
Upsala Universitets Arsskrift, 1861, Math. & Naturvet., 4, 5. 
New name for Delphinapterus Lesson & Garnot (nec Lacépéde). ‘‘The genus 
Leucorhamphus equals Delphinapterus of Gray, with the species JD. peroniü. 
Since Lacépéde (Histoire Naturelle des Cétacés, p. xli) gives the beluga or 
Delphinus leucas as the type of his genus Delphinapterus, the latter name can 
not be transferred to another species. I have, therefore, been obliged to find 
