160 INDEX GENERUM MAMMALIUM. 
v 
Carcinodon—Continued. 
Carcinodon: Kapkivos, crab (in the sense of claw); 06@v=0do0vs, tooth—in 
allusion to the lower molars, which *'increase in size posteriorly and, when 
viewed from the side, the trigonid is seen to curve forward and the talon back- 
ward, which gives the crown a claw-like shape." 
Cardiatherium AmEGHINO, 1883. " Glires, Caviid:ze. 
Bol. Acad. Nac. Cien. Córdoba, V, entr. 3, pp. 270-274, 1883. 
Cardiotherium AMEGHINO, Cont. Conocimiento Mamif. Fósil. Repüb. Argentina, in 
Act. Acad. Nac. Cien., Córdoba, VI, 242-249, pls. x11, fig. 32; xx, figs. 7-12, 
16-17, 22; xxiv, figs. 1-3; xxv, figs. 4—7, 1889. 
Type: Cardiatherium doeringi Ameghino, from the barrancas del Paraná, Entre 
Rios, Argentina. 
Extinct. Based on the second and third lower molars. 
Cardiatherium: «apta, heart; §nptov, wild beast. *'Porlaestructura particular 
de las muelas . . . en forma de corazón." (AMEGHINO. ) 
Cardioderma (subg. of Megaderma) PETERS, 1873. Chiroptera, Megadermatid:ze. 
Monatsber. K. Preuss. Akad. Wiss. Berlin, June, 1873, 488; Dossow, Cat. 
Chiroptera Brit. Mus., 155, 1878. 
Type: Megaderma cor Peters, from Abyssinia. 
Cardioderma: Kapdia, heart; ó£pja, skin—from the ‘cordiform’ base of the 
central longitudinal crest of the nose-leaf. 
Cardiodon AmrGHINO, 1885. Glires, Caviidee. 
Bol. Acad. Nac. Cien. Córdoba, VIII, entr. 1, pp. 61-65, 1885; Cont. Conocimiento 
Mamíf. Fósil. Repüb. Argentina, in Act. Acad. Nac. Cien., Córdoba, VI, 237- 
238, pl. xxr, fig. 16, 1889. 
Species: Cardiodon marshii Ameghino (type), and C. (?) leidyi Ameghino, from 
the barrancas del Paraná, Argentina. 
Name preoccupied by Cardiodon Owen,1841, a gcnus of Reptilia; and by Cardiodus 
Bravard, 1857,a genus of Cayiidee. Replaced by Hucardiodon, Ameghino, 1891. 
Cardiodon: Kapdia, heart; 08v —000vc, tooth. 
Cardiodus Bravarp, 1857. Glires, Caviidee. 
** Observ. Géol. sur le Bassin de La Plata, Buenos Aires, 1857;" ‘‘Cat. Espéces 
Anim. Foss. recueillis dans l'Amérique du Sud (Broch. lithogr., 5 pp., 4°), 
Parana, 1860” (fide Gervats, Zool. et Paléont. Gén., 1° sér., 131, 1867-69); 
*  TmnovrssaRT, Cat. Mamm. Viv. et Foss., Rodentia, in Bull. Soc. d' Études Sci. 
d'Angers, X, 196, 1881. 
Species, 4: Cardiodus waterhousii Bravard, C. medius Bravard, C. minus Bravard, 
and C. dubius Bravard, from the Pliocene of the La Plata basin, Argentina. 
Extinct. 
Cardiodus; Kapdia, heart; 080vc, tooth. 
Cardiomys AMEGHINO, 1885. Glires, Caviid:e. 
Bol. Acad. Nac. Cien. Córdoba, VIII, entr. 1, pp. 59-61, 1885; Cont. Conocimi- 
ento Mamíf. Fósil. Repüb. Argentina, in Act. Acad. Nac. Cien., Córdoba, VI, 
236-237, pl. xx11, figs. 18-19, 1889. 
Type: Cardiomys cavinus Ameghino, from the barrancas del Paraná, Argentina. 
Extinct. Based on the first left lower molar. 
Cardiomys: Kapdia, heart; 40s, mouse—in allusion to the three triangular prisms 
of the first lower molar. 
Cariacus (subgenus of Cervus) Lesson, 1842. Ungulata, Artiodactyla, Cervidee. 
Nouv. Tableau Régne Anim., Mamm., 173, 1842; Gray, List Spec. Mamm. Brit. 
Mus., pp. xxvii, 175, 1843 (raised to generic rank); Proc. Zool. Soc. London, 
1850, 237. 
