MEMINA—MENISCOMYS. 409 
Memina G. Fiscuer, 1814. Marsupialia, Didelphyid:e. 
Zoognosia, III, 611-612, 1814; Tuomas, Cat. Marsup. & Monotrem. Brit. Mus. 
366, 1888 (in synonymy ). 
Memmina RArFINESQUE, Analyse de la Nature, 55, 1815. 
Type: Didelphis memina G. Cuvier ( — Lutra meminna Boddaert = L. minima Zim- 
mermann, 1780), from Guiana. Name antedated by Chironectes Illiger, 1811. 
Memina: From the name of the type species. 
Memina Gnav, 1821. Ungulata, Artiodactyla, Tragulide. 
London Med. Repos., XV, 307, Apr. 1, 1821. 
Meminna AaGAssiz, Nomenclator Zool., Mamm., 20, 1842; Gray, List Spec. 
Mamm. Brit. Mus., pp. xxvii, 172, 1843. 
Type: Moschus pygmeus Linnzeus, from East India. 
Name preoccupied by Memina Fischer, 1814, a genus of Marsupialia. 
Memina: Singalese name. 
Memmina (see Memina Fiscurer). Marsupialia, Didelphyide. 
Menacodon Marsn, 1887. Marsupialia, Triconodontide. 
Am. Journ. Sci. & Arts, 3d ser., XX XIII, 340, 343, pl. x, figs. 5, 6, Apr., 1887. 
Type: Menacodon rarus Marsh, from the upper Jurassic of Wyoming. 
Extinct. Based on a left lower jaw. 
Menacodon: uévos, strength; di», point; óócv = ddovs, tooth—in allusion to 
the cusps of the molars, whieh are shorter and more robust than those of 
Spalacotherium. 
Menilaus AwEGurNo, 1891. Edentata, Megalonychide. 
Revista Argentina Hist. Nat., I, entr. 3a, 154-155, fig. 59, June 1, 1891. 
Type: Menilaus affinis Ameghino, from the Lower Oligocene in the vicinity of the 
city of Paraná, Argentina. 
Extinet. 
Menilaus: Mevé£AÀaos, in Greek legend, son of Atreus and brother of Agamemnon. 
Meniscodon Rür:wMEvER, 1888. Ungulata, Condylarthra, Meniscotheriide. 
Abhandl. Schweiz. Paláont. Gesellsch., Basel, XV, Nr. 1, pp. 50-52, pl., fig. 11, 
1888 (provisional name); ibid., XVII, Nr. 2, p. 12, 1890; XVIII, Nr. 1, pp. 
10-11, 1891; DovuvrnLE, Ann. Géol. Univ., Paris, 1891, VIII, 4° fase:, 644, 
Apr., 1893. 
Type: Meniscodon picteti Rütimeyer, 1891, from the Eocene of Egerkingen, Swit- 
zerland. 
Extinct. Based on a single molariform tooth. 
Meniscodon: u5víGkos, crescent; 66@v = ddo0vs, tooth. 
Meniscoéssus Corr, 1882. Allotheria, Plagiaulacidze. 
Am. Naturalist, XVI, for Oct., 1882, 830-831, Sept. 28, 1882; Tert. Vert., 405, 
1885. (Date of publication, under Hemithlzus. ) 
Type: Meniscoéssus conquistus Cope, from the Cretaceous (Laramie) of Wyoming. 
Possibly antedated by Peronychodon Cope, 1876. 
Extinct. Based on two molar teeth and the distal extremity of a humerus. 
Meniscoéssus: u15)viGicoc, crescent; 766@7, less. 
Meniscomys Corr, 1878. Glires, Sciuridee. 
Paleont. Bull., No. 30, pp. 5-6, Dec. 3, 1878; Proc. Am. Philos. Soc., XVIII, 
67-68, Dec. 30, 1878; Hav, Science, new ser., X, 253, Aug. 25, 1899 (type fixed). 
Species: Meniscomys hippodus Cope (type), and M. multiplicatus Cope, from the 
Miocene (John Day) of Oregon. 
Extinct. 
Meniscomys: unvi6Kos, crescent; “0s, mouse—in allusion to ‘‘the triturating 
surface [of the upper molars, which] exhibits two external and one internal 
crescentic sections of the investing enamel." (Cope. ) 
