496 INDEX GENERUM MAMMALIUM. 
Pachyspondylus BnaAwpr, 1873. Sirenia, Halitheriidze? 
Mém. Acad. Imp. Sci. St.-Pétersbourg, 7° sér., X X, 57, 347, 1873. 
Lapsus for Pachyacanthus, 1871, described in the same memoir (pp. 166-188). 
Pachyspondylus: mayvs, thick; ózóvóvAos, vertebra. 
Pachytherium Lux», 1838. Edentata, Glyptodontide. 
Overs. K. Danske Vidensk. Selsk. Forhandl. Kjóbenhavn, 1838, 12; Ann. Sci. 
Nat., Paris, 2° sér., XI, Zool., 218, 231, Apr., 1839; Lrars, Climats, Géol., Faune 
et Geog. Botanique Brésil, 375, 1872. : 
Pachyterium Luxp, Echo du Monde Savant, 6° ann., No. 430, p. 245, Apr. 17, 1839. 
Type: Pachytherium magnum Lund, from the bone caves between the Rio das 
Velhas and Rio Paraopeba, Minas Geraes, Brazil (alt., 2,000 ft.). 
Extinet. Name provisionally proposed fora species represented by 'quelques 
os des extrémités." 
Pachytherium: wayvs, thick; §ypiorv, wild beast. 
Pachyura (subgenus) Sttys-Lonecuamps, 1839. Insectivora, Soricidz. 
Études de Micromammalogie, 32, 142, 1839; BoxAranrE, Icon. Fauna Italica, I, 
1832-41 (under Pachyura etrusca). 
Type: Crocidura etrusca Bonaparte (=Sorex etruscus Savi), from southern Italy. 
Name preoccupied by Pachyurus Agassiz, 1829, a genus of Pisces. 
Pachyura: raxvs, thick; ovpa, tail. 
Pachyuromys Larasrr, 1880. Glires, Murid:e, Gerbillinze. 
Le Naturaliste, 2° ann., No. 40, pp. 313-315, Nov. 15, 1880; FonaBzs, Zool. Record 
for 1880, X VII, Mamm., 23, 1881. 
Type: Pachyuromys duprasi Lataste, from the Algerian Sahara, northern Africa. 
Pachyuromys: waxvs, thick; ovpa, tail; “0s, mouse—in allusion to the short, 
thick, and fleshy tail. 
Pachyzaedyus AmEGHINO, 1902. Edentata, Dasypodide. 
Bol. Acad. Nac. Cien. Córdoba, XVIII, 67, May, 1902 (sep. p. 65). 
Type: Pachyzaedyus cuneiformis Ameghino, from the Astraponotus beds, Patagonia. 
Extinct. 
Pachyzaedyus: wayvs, thick; + Zaedyus. 
Paciculus Corr, 1879. Glires, Muride, Cricetine. 
“Paleont. Bull., No. 31, p. 2, Dec. 24, 1879;" Proc. Am. Philos. Soc., XVIII, 
371, Dec. 30, 1879; Am. Naturalist, XIV, 60, Jan., 1880. 
Type: Paciculus insolitus Cope, from the Miocene (John Day) of Oregon. 
Extinct. Based on part of the upper jaw containing four teeth. 
Pacos (subgenus of Llama) Gray, 1872. Ungulata, Artiodactyla, Camelide. 
Cat. Ruminant Mamm. Brit. Mus., 101, 1872. 
Type: Camelus pacos Linnzeus, from South America. 
Pacos: paco, pacos, the Peruvian name of a species of llama, adopted by Buffon 
(Hist: Nats; CDE 165 1765): 
Pephagomys, Paephagomys (see Poephagomys). Glires, Octodontidee. 
Paedotherium Burmeister, 1888. Ungulata, Typotheria, Hegetotheride. 
Anal Mus. Nac. Buenos Aires, III, entr. xv, 179, Oct., 1888. 
Pedotherium AwEantiNo, Act. Acad. Nac. Cien., Córdoba, VI, 918, 1889. 
Type: Paedotherium insigne Burmeister, from Monte Hermoso, near Bahia Blanca, 
Province of Buenos Aires, Argentina. 
Extinct. Based on the remains of three crania. 
Paedotherium: z ais, 7a16 6s, child; 6ypiov, wild beast—‘‘aludiendo 4 su tipo casi 
infantil del mayor" ( Typotherium). 
Paginula AwzcGnriNo, 1901. Ungulata, Ancylopoda, Isotemnidee. 
Bol. Acad. Nac. Cien. Cérdoba, X VI, 415, July, 1901 (sep. p. 69). 
Type: Paginula parca Ameghino, from the ‘Cretaceous’ of Patagonia. 
Extinct. 
Paginula: Lat., dim. of pagina, leaf, sheet. 
