302 NOTES ON THE CANIDH OF THE WHITE RIVER OLIGOCENE. 
distal fibular facet is quite large, beimg much as in Dimctis and consequently much 
larger than in ‘the recent Canide. 
The fibula (Pl. XX, Figs. 19, 20), which is greatly reduced in the modern dogs, is 
in Daphenus much stouter and has heayier ends, both proximal and distal. In Canis 
these ends have the appearance of being reduced and simplified from the condition seen 
in the White River genus. In the latter the proximal end of the fibula is relatively very 
large, especially in the fore-and-aft dimension, in which it considerably exceeds that of 
Dinictis, though the excess is principally due to a large tuberosity which projects from 
the hinder border, and which is present, though much less prominent, in the Machairo- 
dont. The facet for the head of the tibia is longer antero-posteriorly and narrower 
transversely than in the latter, forming a long, narrow, irregular oval. The shaft of the 
fibula is slender, though very much thicker both actually and proportionately than in 
Canis, and has about the same proportions as in Dinictis ; it is laterally compressed, the 
‘principal diameter being the antero-posterior one, and of oval section, though its size and 
shape vary from point to point in an irregular fashion. 
The distal end of the fibula resembles that of Dinictis, though it is somewhat smaller, 
in proportion to the length of the bone. ‘The enlargement is both antero-posterior and 
transverse and gives rise to a very stout outer malleolus, at the postero-external angle of 
which is a deep sulcus for the peroneal tendons. The distal tibial facet is rather larger 
than that of Dinictis, while the surface for the astragalus is somewhat smaller, the two 
together making a high narrow band. 
Measurements. 
No. 11421. | No. 11424. | No. 11423. 
Femur, length (fr. head) .........:scecccccecnseecececccces sesseeesecseneeenreoes adi toe acy ea 0.195 
«« ‘Dreadth of proximal end........ ....0cceceeececcceeecececeececcecerencnerneeeeenereneeseeeseenee: - 044 
es GO" _GbETHIL r0\6 ld scosocnbsoomnpnossodcodadedodonsos ods OD0ocd osa0DodDede: NoaDobaosOI0oDNGoD00 .038 
“fs €€  POtUAT ZTOOVE.--------eeeeceeeeereneeeeeeeeccnessnenceseneccsetcserecessraeeseneeeees .014 
Bis DAN Terie thiva set emma Sk es ai Boncas i tcc antalat cae ang ae ean ee ema 149° 
¢ “‘preadth of proximal end .........-.-cscccsneeeccecensercnscecensercnesererscsensserensstecensesee .031 .036 
cs OF AIP EYL Bia ly cacona nodoeacosnonadcosqecmedodaogss0N060579-0 nos oDsoOSaONBODaROnUBeNOSNOSS .021 .021 -025 
Fibula, ant.-post. diameter prox. CN .....eeeceeeeeseeeeeeneeeesccereeeeseseescssaeceseetaareessecees 019 
ef as ee Alii CO Sggecoeeesonencengoodbdbascodabononcocdscuencosasddcesocca00q000 .0145 .017 
VII. Tue Pes (Pl. XX, Figs. 21, 21a, 22). 
The pes, which displays structures of the highest interest, is much better represented 
in the collection than the manus and may be more adequately described. As a pre- 
