622 INDEX GENERUM MAMMALIUM. 
Scarturus GrocEn, 1841. Glires, Dipodid:e. 
Hand- u. Hilfsbuch Naturgesch., I, pp. xxxi, 106, 1841; THomas, Ann. & Mag. 
Nat. Hist., 6th ser., XV, 191, 192, Feb. 1, 1895. 
Based on ine rome toed species o Dipus o the Libyan Desert, northeast Africa. 
Type: Dipus tetradactylus Lichtenstein (fide Thomas). 
Scarturus: Gictprge, a leaper; obpa, tail—i. e., a ‘long-tailed leaper,’ in allusion 
to the use of the tail in leaping. 
Scavia, Scavia (see Cavia). ] Glires, Caviidee. 
Scelidodon AwrcGniwo, 1881. Edentata, Megatheriid:e (Scelidotheriidze). 
** La Antigüedad del Hombre en el Plata, II, 307, 1881’’ (fide AmEGurno, Cont. 
Conocimiento Mamff. Fósil. Repüb. Argentina, in Act. Acad. Nac. Cien., Cór- 
doba, VI, 724-731, pls. xri fig. 6, xri, xriv figs. 1-3, 5, 7, xiv fig. 3, 1889). 
Type: Scelidodon copei Ameghino, Don **]as toscas del ils del Rio de la Plata, 
en el Municipio de Buenos Aires," Argentina. 
Extinct. Basedonaftragmentof fhe left upper jaw containing parts of three molars. 
Scelidodon: Scelido- (therium); 65@v = 66 0vs, tooth—i. e., a tooth resembling that 
of Scelidotherium. 
Scelidotherium Owen, 1840. Edentata, Megatheriid:e (Scelidotheriidz). 
Zool. Voy. H. M.S. ‘Beagle,’ pt. 1, Foss. Mamm., 73-99, 111, pls. xx-xxim, 
xxiv fig. 1, xxv, xxvi figs. 2, 4, 6, XXVII, XXVIII Ae 2, 1840. 
Type: Scelidotherium leptocephalum Owen, from Punta Alta, Bahia Blanca, north- 
ern Patagonia. 
Extinct. Based on ‘the cranium, nearly entire, with the teeth and part of the 
os hyoides; the seven cervical, eight of the dorsal, and five of the sacral verte- 
bree, the two scapulie, left humerus, radius and nine two carpal bones, and an 
ungueal phalanx; both femora, the proximal extremities of the left tibia and 
fibula, and the left astragalus.’ 
Scelidotherium: Gk eAis, 6KEAtOOs, leg, femur; Oyptov, wild beast—in allusion to 
the breadth of the femur. 
Scelopleura (see Scleropleura). Edentata, Dasy podid:e. 
Sceparnodon Ramsay, 1881. Marsupialia, Phascolomyide. 
Proc. Linn. Soc. New South Wales, V, 495, 1881 (nomen nudum?);* Owen, Proc. 
Roy. Soc.. London, X XXVI, No. 228, for Nov. 1883, 3-4, 1884; Phil. Trans. 
Roy. Soc. London, vol. 175, for 1884, 245-248, pl. 11, 1885 (dessen 
Type: Sceparnodon ramsayi Owen, from the Pleistocene of Queensland and South 
Australia. 
Extinct. Based on casts of teeth from the vicinity of Lake Eyre, central South 
Australia, and from Gelgoine Station, New South Wales; and also on a portion 
of a tooth from Kings Creek, near Toowoomba, Queensland. 
Sceparnodon. Giézapvov, adze; 65@v=d6o0vs, tooth—in allusion to the upper 
incisors. 
Schismotherium AmeEGuHINo, 1887. Edentata, Megalonychidze. 
Enum. Sist. Especies Mamíf. Fós. Patagonia Austral, p. 21, Dec., 1887. 
Type: Schismotherium fractum. Ameghino, from the lower Tertiary of southern 
Patagonia. 
Extinct. 
Schismotherium: Gy16uós , cleaving; 07ptov, wild beast—in allusion to the trans- 
verse groove of the lower molars. 
Schistodelta Copr, 1899. Glires, Muridze, Microtinee. 
Journ. Acad. Nat. Sci. Phila., 2d ser., XI, pt. 2, p. 206, 1899. 
Type: Microtus sulcata Cope (=M. diluvianus Cope), from the Pleistocene of the 
Port Kennedy bone cave, Montgomery County, Pennsylvania. 

* *«Mr, D e chien a t foot ofa RUE allied to Diprotodon, for which hg 
proposed the name Sceparnodon, from the adze-like character of the upper incisor,” 
