LEIDYOTHERIUM—LEMMUS. 367 
Leidyotherium—Continued. 
Extinct. Based on a fragment of a molar tooth. 
Leidyotherium: In honor of Dr. Joseph Leidy, 1823-1891, one of the leading 
American paleontologists; author of ‘Ancient Fauna of Nebraska,’ 1854, ete. 
Leimacomys M rscurg, 1893. Glires, Murid:e, Dendromyine. 
Sitzungsber. Gesellsch. Naturforsch. Freunde, Jahrg. 1893, Nr. 4, pp. 107-109 
(Sitzung vom 18 April). 
Limacomys, LyDEKKER, Zool. Record for 1893, XX X, Mamm., 31, 1894. 
Type: Leimacomys büttneri Matschie, from Bismarckburg, Togo, West Africa. 
! Leimacomys: Aeiuaxé, Actuakos, garden, meadow; “Us, mouse. 
Leiobalena Escuricut, 1849. Cete, Baleenidee. 
K. Danske Vidensk. Selsk. Skrifter, Naturv. & Math. Afd., Kjóbenhavn, 5te 
Reekke, I, 108, 1849; Unters. Nord. Wallthiere, 7, 95, 1849. 
Based on the ‘Glathvaler’ or ‘Rethvaler’ of the northern seas. 
' Leiobalena: Aetos, smooth; + Balxna. 
Leiponyx JrEwTINK, 1881. Chiroptera, Pteropodide. 
Notes Leyden Museum, III, Note xv, 59-61, Apr., 1881. 
Liponyx FonBEs, Zool. Record for 1881, XVIII, Mamm., 13, 1882. 
Type: Leiponyx büttikoferi Jentink, from Millsburg, on the St. Paul River, Liberia. 
Name preoccupied by Liponyx Vieillot, 1816, a genus of Birds. 
Leiponyx: Atízc, to leave, to be wanting; órv&, claw—in allusion to the absence 
of a claw on the index finger. 
Leithia LvpbEKKER, 1896. Glires, Sciuridae? ( Leithiidz). 
Proc. Zool. Soc. London, for 1895, pt. rv, 860-863, fig. 1 in text, Apr. 1, 1896. 
Type: Myoxus melitensis Leith Adams, from the Pleistocene of Malta. 
Extinct. 
Leithia: In honor of Andrew Leith Adams, 1826(?)-1882, zoologist, army sur- 
geon (1848), and surgeon-major (1861) ; professor of zoology in the Irish College 
of Science, Dublin, 1874-78, and later professor of natural science in Queen’s 
College, Cork. 
Lelfunia hRorH, 1901. Ungulata, Ancylopoda, Isotemnidee. 
Revista Mus. La Plata, X, 255, Oct., 1901 (sep. p. 7). 
Type: Lelfunia haugi Roth, from the ‘upper Cretaceous’ of the Rio Chubut, 
Patagonia. 
Extinct. 
Lelfunia: Lelfun, an Araucanian geographical name, the Lelfun plain, Patagonia. 
Lemmomys Lesson, 1842. Glires, Murid:e, Microtin:e. 
Nouv. Tableau Régne Animal, Mamm., 123, 1842. 
Type: Mus talpinus Pallas, from southern Russia. 
Lemmomys: Lemmus; 40s, mouse—'lemming mouse.’ 
Lemmus Linx, 1795. Glires, Murid:e, Microtine. 
Beytr. Naturgesch., I, pt. rt, 74, 1795; G. Cuvier [Tabl. Élém. Hist. Nat. Ani- 
maux, 137-138, 1798—‘ Les Campagnols']; Lecons Anat. Comp., I, tabl. 1, 1800; 
TrEDEMANN, Zoologie, pp. xv, 473-476, 1808; Miter, N. Am. Fauna No. 12, 
pp. 13-14, 36-37, pl. 1 fig. 6, m fig. 14, text figs. 11, 12, July 23, 1896. 
Lemnus RocnEBRUNE, Actes Soc. Linn. Bordeaux, XII, for 1841, No. 42, p. 216, 
Jan. 15, 1843. 
Species, 6: Mus socialis, M. lagurus, M. lemmus (tvpe), M. torquatus, M. glareolus, 
and M. hudsonius. Cuvier’s genus (1798) included 4 species: Mus arvalis, M. 
amphibius, M. lemmus, and .M. aspalax. 
Lemmus: Scandinavian lemming, a lemming, ‘‘according to Aasen, lit. *destroy- 
ing,’ with reference to its ravages." (Century Dict.) 
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