ACANTHOMYS—ACERODON 73 

Acanthomys Lesson, 1842. Glires, Muridee, Murine. 
Nouv. Tableau Régne Animal, Mamm., 135, 1842; Gray, List Spec. Mamm. Brit. 
Mus., pp. xxiii, 108, 1843. 
Species, 5: Mus setifer Horsfield, from Java; Mus alexandrinus E. Geoffroy, from 
Egypt; Acanthomys perchal Lesson, from Inaia; Mus platythric Bennett, from 
India; and M. hispidus Lichtenstein, from Arabia. (See Acomys I. Geoffroy, 
1838.) 
Acanthomys: &arüe, spine; 0s, mouse, ‘spiny mouse’—from the coarse, 
flattened, grooved spines on the hind part of the back. 
‘ 
Acanthomys Gray, 1867. Glires, Muridee, Murine. 
Proe. Zool. Soc. London, 598-599, 1867. 
Type: Acanthomys leucopus Gray, from Cape York, Queensland, Australia. 
Name preoccupied, by Acanthomys Lesson, 1842 (—.comys Geoffroy, 1838. See 
Alston, Proc. Zool. Soc. London, 1877, 124 footnote). 
Acanthomys: &kavGa, spine; “40s, mouse—from the flat, channeled, spiny hairs 
on the back and under part of the body. 
Acanthonotus Goupruss, 1809. Monotremata, Tachyglossidze. 
Vergleich. Naturbeschreibung Sáugeth., pp. xix, 308-309, 1809. 
Type: Acanthonotus myrmecophagus Goldfuss (=Myrmecophaga aculeata Shaw), 
from New South Wales, Australia. Based on the porcupine anteater of Pen- 
nant (Hist. Quad., II, 262, pl. xcvr). 
Name preoccupied by Acanthonotus Bloch, 1797, a genus of Pisces. 
Acanthonotus: &avüóvcros, prickle backed (from dkav6a, spine; v@ros, 
back )—in allusion to the spiny covering. 
Acaremys AMEGHINO, 1887. Glires, Erethizontide. 
Enum. Sist. Especies Mamif. Fos. Patagonia Austral, p. 9, Dec., 1887. 
Species, 3: Acaremys murinus Ameghino, A. minutus Ameghino, and A. ininutissi- 
mus Ameghino, from the Lower Tertiary of southern Patagonia. 
Extinct. 
Acaremys: GKapys, small, tiny; “0s, mouse. 
Acdestis AMEGHINO, 1887. Marsupialia, Epanorthide. 
Enum. Sist. Especies Mamif. Fós. Patagonia Austral, p. 5, Dec., 1887. 
Type: Acdestis owenii Ameghino, from the Lower Tertiary of the Rio Santa Cruz, 
Patagonia. 
Extinct. 
Aedestis: " Ay irs, an epithet of Cybele or Rhea, earth goddess or goddess of 
fertility (derivation from Ameghino, but application not evident). 
Aceratherium (subgenus of Rhinoceros) Kaur, 1832. Ungulata, Rhinocerotidze. 
Oken's Isis, 1832, 898-904, pl. xvii, fig. 1; Osborn, Science, new ser., IX, 161- 
162, pl. 1, Feb. 3, 1899 (probable presence of horn). 
Acerotherium Kaur, Oken's Isis, 1834, 314 (raised to generic rank); Deser. Oss. 
Foss. Mamm. Darmstadt, cahier 3, p. 49, 1834. 
Type: Rhinoceros incisivus Cuvier, from the Upper Miocene or Lower Pliocene in 
the vicinity of Mainz, Hesse, Germany. 
Extinct. Based on two skulls. 
Aceratherium: a, without; Képas, horn; 67jpzov, wild beast—from the supposed 
absence of horns; but Osborn has shown that the animal probably possessed a 
rudimentary horn. 
Acerodon JounpaN, 1837. Chiroptera, Pteropodid:e. 
Ann. Sci. Nat., Paris, 2e sér., VIII, Zool, 369-370, Dec., 1837; Comptes Rendus, 
Paris, VI, 3, 1838. 
Type: 'L ‘Acérodon de Meyen’ Jourdan ( — Pteropus jubatus Eschscholtz), from 
the Philippine Islands. (See Dobson, Cat. Chiroptera, 69, 1878). 
Acerodon: a, without; Képas, horn; 6S@v=0d ovs, tooth. 
