IDEODELPHYS—INDRI. 349 
Ideodelphys AmEGHINO, 1902. Marsupialia, Microbiotheriide. 
Bol. Acad. Nac. Cien. Córdoba, XVII, 43-44, May, 1902 (sep. pp. 41-42). 
Type: Jdeodelphys microscopicus Ameghino, from the Notostylops beds of Pata- 
gonia. 
Extinet. Based on a piece of the anterior part of the mandible with 11 circular 
alveoli without teeth. 
Ideodelphys: Anagram of Hodidelphys Ameghino, 1891. 
Idiocetus CarELLINI, 1876. Cete, Baleenidee. 
Atti R. Accad. Lincei, 2* ser., III, pt. 2, pp. 12-13, 1876; Van BENEDEN, Bull. Acad. 
Roy. Sci. Belgique, 2* sér., L, 24, 1880. 
Type: Idiocetus guicciardinii Capellini, from the Pliocene of Montopoli, Italy. 
Extinct. 
Idiocetus: 1610s, peculiar; «7jros, whale—* Cetaceo singolare." (CAPELLINI. ) 
Idiurus Marscurg, 1894. Glires, Anomaluridee. 
Sitzungsber. Gesellsch. Naturforsch. Freunde, Berlin, 1894, No. 8, pp. 194-200, 
1 fig. in text. 
Type: Idiurus zenkeri Matschie, from the Yaunde Station, in the southern Came- 
roon district, West Africa (about S. lat. 3° 49’, E. lon. 11° 417). 
Idiurus: 1910€ , peculiar; odpd, tail—in allusion to the long thinly-haired tail, 
with a number of rows of small scales on the under side near the base. 
Idomeneus (subgenus of Meriones) SCHULZE, 1900. — Glires, Murid:e, Gerbillinz. 
Zeitschr. Naturwiss., Stuttgart, LX XIII, 201, Dec. 19, 1900. 
Type: Mus tamaricinus Pallas, from the region near the Caspian Sea, Turkestan. 
Idomeneus: "I8ouevets, king of Crete, companion of Meriones, and leader of 
the Cretans against Troy. 
*... Idomeneus 
The mighty spearman and Meriones, 
Fierce as the god of war, commanded these, 
And came to Troy with eighty dark-ribbed barks.” 
(Bryant's Trans. Iliad, IT, 808.) 
Meriones being one of the early names applied to the Gerbillinze, Jdomeneus 
may be aptly associated with it. 
Iemisch Rorn, 1899. Ferze, Felidze? 
Revista Mus. La Plata, IX, 442-445, lám. v, fig. 1, 1899; LEHMANN-NITSCHE, 
Revista Mus. La Plata, IX, 467; 1899; HArcHER, Science, new ser., X, 815, 
Dec. 1, 1899. 
New name for Neomylodon Ameghino, 1898, which is considered a misnomer for 
a species probably representing a Carnivore, instead of an Edentate.  **In 
lemisch listai we have an instance in Zoological Science, which, if not unique, 
surely ought to be, of a species in which the original type may be fairly 
said to consist of traditions, collected among an entirely uncivilized people." 
(HaTCHER. ) 
lemisch: Native name among the Tehuelche Indians of Patagonia. ‘‘ lemisch 6 
tigre del agua... un cuadripedo misterioso y corpulente, de terrible 
aspecto é invulnerable, en cuyo cuerpo dicen no penetran ni los proyectilos de 
las armas de fuego." (AmEGuHINO, La Pirámide, I, 55, 1899.) 
Ignavus Friscu, 1775. Edentata, Bradypodid:e. 
Das Natur-System vierfüss. Thiere, in Tabellen, Tab. Gen., 1775; BuumenBAcH, 
Handb. Naturgesch., Theil I, 70-71, 1779. 
Type: ‘Das Faulthier. Blumenbach’s genus was based on Jgnavus tridactylus 
(= Bradypus tridactylus Linnzeus), from South America. 
Ignavus: Lat., inactive, lazy—equivalent to the common name ‘sloth.’ 
Ignitherus (see Sinetheres). Glires, Erethizontide. 
Indri É. Grorrroy, 1796. Primates, Lemurid:e. 
Mag. Encyclopédique, 2* année, I, 46, 1796. 
Indris Cuvier, Lecons Anat. Comp., I, tabl. 1, 1800. 
