94 INDEX GENERUM MAMMALIUM. 
Amorphochilus—Continued. 1 
Type: Amorphochilus schnablii Peters, from Tumbez, northern Peru. 
Amorphochilus: &op@os, misshapen, ugly; yézAos, lip—in allusion to the fleshy 
prominence or disk on the upper lip. ] 
Amphalopex Kavr,* 1862. Fer, Canidee. 
‘Beitr. niiheren Kenntniss urwelt. Sáugeth., Heft 5, p. 15," 1862 (fide FRAAs, 
Jahreshefte Ver. vaterlind. Naturk. in Württemberg, X XVI, Heft 1, 160, 161, 
1870); TRovEssART, Cat. Mamm. Viv. et Foss., Carnivores, 53-54, 1885. 
Type: Amphicyon intermedius Meyer, from Ulm, Wurttemberg, Germany (fide 
FRAAS, l. c. ). 
Extinct. 
Amphalopex: cuit doubtiul, ambiguous; @cA@77é, fox. 
Amphechinus Aymarp, 1850. Insectivora, Erinaceide. 
Ann. Soc. Agr., Sci., Arts et Comm. du Puy, XIV, 109-110, 1850; PowEr, Cat. 
Méth. Vert. Foss. Bassin de la Loire, 16, 1854 (in synonymy); Grrvats, Zool. 
et Pal. Francaises, 2* éd., 53, 1859. 
Type: Amphechinus arvernensis Aymard ( — Erinaceus arvernensis Blainville), from 
the Lower Miocene of Auvergne, France. 
Extinct. 
Amphechinus: Gui, around, on both sides; éyZvos, hedgehog. 
Amphiarctos BrarNviLLE, 1841. Ferz, Ursidee. 
Ostéog. Mamm. Récents et Foss., II, fasc. 1x (Carnassiers, Subursus), 96—100, 
1841. 
Type: Ursus sivalensis Cautley & Falconer, from the Siwalik Hills, India. Name 
provisionally proposed and changed to Sivalarctos on p. 114. 
Extinct. 
Amphiarctos: Gui, doubtful; apKeos, bear. 
Amphiaulacomys Larasrr, 1882. Glires, Muridee, Gerbillinee. 
Le Naturaliste, Paris, II, No. 2, pp. 11-12, Jan. 15, 1882; No. 16, p. 127, Aug. 15, 
1882. 
Type: Rhombomys pallidus Wagner (= Meriones opimus Lichtenstein), from south- 
eastern Russia. 
Amphiaulacomys: ei, on both sides (in the sense of double); cvAa£, furrow; 
in allusion to the double-grooved incisors. 

4 Dc, mouse 
Amphibos FarcoxEn, 1865. Ungulata, Artiodactyla, Bovidee. 
FarcoxER, quoted by Rütimeyer in Verhandl. Naturforsch. Gesellsch. Basel, IV, 
?tes Heft, 331, 1865 (nomen nudum?); Palzeont. Memoirs & Notes, I, 23, 
280, 547, 554, 1868; Mem. Geol. Surv. India (Paleeontologia Indica), ser. 10, 
I, pt. mm, 150-153, 174, pl. xx1 fig. 1, pl. xxiv [reissue pls. xxr fig. 1, xx1'— 
xxii—4Temibos], 1878. 
Type: Amphibos acuticornis Falconer, from the Siwalik Hills, India. 
Extinct. Based on crania. 
Amphibos: &u e£, around, on both sides; -- Bos. 
Amphicetus Van BENEDEN, 1880. Cete, Balzenidee. 
Bull. Acad. Roy. Sci. de Belgique, 2° sér., L, No. 7, pp. 20-21, 1880. 
Species 4, from the deposits in the vicinity of Antwerp, Belgium: Amphicetus 
later Nan. Beneden, A. verus Van Beneden, A. editus Van Beneden, A. rotun- 
dus Van Beneden. 

* Not Meyer, 1849, as given by Trouessart, l. c., p. 53. 
+ The preposition dq means, primarily, on both sides, on all sides, around. It 
is used to denote relationship and also in the sense of doubtful, ambiguous. 
