348 NOTES ON THE CANIDZ OF THE WHITE RIVER OLIGOCENE. 
that of me. ii and is of a more quadrate section, the dorsal and lateral surfaces forming 
distinct angles. 
The fourth metacarpal has a narrow, but deep head, which projects prominently 
behind the plane of the shaft; the facet for the unciform is slightly concave in the 
transyerse and strongly convex in the dorso-palmar direction. Compared with the cor- 
responding bone of Canis, the following differences in the shape of the facets for the 
adjoining metacarpals may be observed. The surface for me. ili is, as in the recent 
animals, divided into dorsal and palmar portions, but they are not completely separated ; 
the dorsal moiety is much larger, but not nearly so prominent, and the palmar portion is 
much smaller. The facet for me. y is of about the same shape in both genera. ‘The 
shaft is slender and nearly straight, but slightly arched toward the dorsal side; though 
relatively short, it considerably exceeds me. ii in length. The prominence of the lateral 
ligamentous processes gives great proportionate breadth to the distal end. The trochlea 
is like that of me. ii, except for its greater size and presents the same differences from the 
modern type. 
The fifth metacarpal has been lost from the specimen. 
The phalanges are yery remarkable, but can be most conveniently described in con- 
nection with the pes, with which the most complete specimens are associated. 
Measurements. 
No. 11424. No, 11425. 
Scapho-lunar, breadth 0.015 
24 «depth (Gorso-palmar)......ccccceccecesececeeseseerennscssneeeecceeseccesccccscccnseesecasccesessenssseseces 011 
Metacarpal i, length......cccccccceceecceceeecececnecearteeeeeceeecnseeccesescaseesenessssseassseacesessteaeeneseeeercrsreccercs .023 .026 
i breadth of proximal end........... Fecer CBRE cee aceccp sbonasenancspadsnaconqgceooe00g .007 .009 
oo GE GINS HAIL G16 | po6conpc00snocob canon ooASEN gosDODODOSDSODOOsHCODSCODHODOsbODAbdSSGONoOSoCoNSSq9000056" .006 
os €€ Gistal trochlea........sscsssessseecessceesencccesccssuceccaaeseceecuscsessesenssenserssccsscsens .0045 
Metacarpal ii, length.........sccccccnceceeccnneeeeeecceneccesccescneanscecssseeccececesersrssesecesseesannnenss poac00t000000005 0395 
es “ breadth of proximal end .009 
UG ef 6G install @iaVél-coosoonneeanndcqn 000005000 pnodenodOD DO sDODODONdHEUOSDUSOUOSUBNBAOGSAOSDDASDOQcOSEN000 -012 
a af ie GG TRGYEL HIKE jronconcccenscn nonoDononoDDqGOsODSNDSECENBDOS0R00CC Suneeaevesecseceseccesseseces .009 
Metacarpal iii, breadth of proximal end........--eeceteeesssesesseceeeeeeeeeeneeeseeceranecasenaaeereeeeeeseeenecererces -0105 
Metacarpal iv, length -050 
se  Dreadth of proximal end.........cccssseeecccccseseececsrsneeececeeececeseserencnsecsescassaseeessecenans .0095 
ss ae GB GIS EAT (1116! coococooopacdbeug2o0dD50aHeccKO6 oc¢nod danoacansobapAAabocoacconopdaneocq—ICo0adaGn 030 .012 
o ns a BO OCHeatenrateseeantecteeeesnetsester-teerane Spqnodqoaadqassonnq50bcanSSNOnDDSEeNeS .010 
