648 INDEX GENERUM MAMMALIUM. 
Stereoceros Duyrrnoy, 1853. Ungulata, Perissodactyla, Rhinocerotide. 
L’ Institut, XXI, 109, 1853; Comptes Rendus, Paris, X X XVI, No. 11, pp. 453-454, 
Mar., 1853; Archiv. Mus. Hist. Nat., Paris, VII, 125, 1854. 
Type: Stereoceros typus (or S. galli) Duvernoy, irom the valley of the Rhine. 
Extinct. Based on ‘un fragment de crane fossile." 
Stereoceros: OTEPEOS, solid; KEpas, horn. 
Stereodectes Corr, 1869. : Glires, Sciuridee. 
Proe. Acad. Nat. Sci. Phila., 1869, 3; Proc. Am. Philos. Soc., XI, 172-173, pl. ri 
fig. 3, 1869. 
Type: Slercodectes tortus Cope, from the Pleistocene limestone breccia of a cave in 
Wythe County, Virginia. 
Extinct. Based on ‘a nearly perfect upper incisor tooth, and fragments of 
numerous others.’ 
Stereodectes: : OTEPEOS, solid, ONKTNS, biter 
are more solid than in existing allied genera." 
Stereodelphis GEnvais, 1848-52. Cete, Squalodontidee. 
Zool. et Paléont. Francaises, 1° éd., I, 152, expl. pl. 9 figs. 4-6, 1848-52; 2° éd., 
310-311, Atlas, V, pl. 9 figs. 4—6, 1859. 
Type: Delphinus brevidens Dubreuil & Gervais, from **la molasse dite pierre de 
Marabel,’’ near Castries, Dépt. Hérault, France. 
Extinct. Based on a portion of the lower jaw with teeth. 
Stereodelphis: OTEPEOS, solid; éeA dis, dolphin. 
[21 

de a rodent with incisors ‘‘ which 
Stereognathus CHARLESWorTH, 1855. Allotheria, Plagiaulacid:e. 
Rept. Brit. Ass. Adv. Science, for 1854, Notes & Abstracts, 80, 1855; OwEN, Quart. 
Journ. Geol. Soc. London, XIII, pt. 1, No. 49, pp. 1-11, pl. 1, Feb. 1, 1857. 
Type: Stereognathus ooliticus Charlesworth, from the Stonesfield Slate, Oxford- 
shire, England. 
Extinet. Based on ‘ part of the centre of one division of the lower jaw.’ 
Stereognathus: 6tepeds, solid; yv aos, jaw. 
Sterops (see Stenops). Primates, Lemuridee. 
Sthenomerus Dr Vis, 1883. Marsupialia, Diprotodontid:e ? 
Proc. Linn. Soc. New South Wales, VIII, pt. 1, 11-15, 1883. 
Type: Sthenomerus charon De Vis, from Gowrie Creek, Queensland, Australia. 
Extinct. Based on,a molar tooth and fragments of various bones. 
Sthenomerus: 00£vos, strength; neds, femur—evidently in allusion to the size of 
the femur, which ** as restored ‘measures 13 inches in length and 2j inches in 
its least transverse diameter." 
Sthenurus Owen, 1873. Marsupialia, Macropodidee. 
Proc. Roy. Soc-: London, XXTI,:No..141, p. 198,* 1879; "Phil Trans: Roy. Soc: 
London, CLXIV,: pt..1, 265-274, pls. XX fig::30,. xxi. figs- 3-9, xxi1v-figs. 4-9, 
xxvit figs. 5-9, 1874. 
Species: Macropus- atlas Owen. (type?), and. Sthemurus - brehus Gent from the 
breccia caye in Wellington Valley, New South Wales, Australia. 
Extinct. 
Sthenurus: 66€v.0s, strength; ovp«, tail. 
Stibarus Corr, 1873. ^^ -Ungulata, Artiodactyla, Suidee ( Leptocheeridze). 
Paleont.. Büll., No. 16, p. 3; Aug. 20, 1873;; Ann: Rept. U: S. Geol, & Geog. Surv. 
eres VSETS ford 873, 503, 1874. 
Type: Shibar us obtusilobus Cope, from the Oligocene of C olorado. 
Extinet. Based on ‘a portion of a mandibular ramus which supported the three 
anterior premolars.’ 
Stibarus: 6ripapos, strong, stout 
