209 
II., 3, is the smallest, and generally the most pointed of th 
ungual phalanges. 
Considered collectively the characteristics of the toes are the 
depression of the phalanges and of the articulations, with the 
exception of those with the tarso-metarsus ; the length, slender- 
ness and compression of the proximal phalanx of the inner toe ; 
the inconsiderable degree of concavity of the proximal articula- 
tion surfaces, due in great part to the absence of that production 
posteriorly of the central part of the superior and inferior borders 
which exists to a marked degree in the phalanges of the emeu, and 
to a less, though still to a considerable, degree in Dinornis, and 
which, when present, must contribute materially to the strength 
of the joints. So also the absence of deep vertical grooving of 
the distal trochlez and the shortness, depression and feebleness 
of the ungual phalanges of Genyornis are additional characters 
which indicate weakness of the toes and a want of security in 
their joints. 
EXPLANATION OF PLATE III. 
Genyornis newtoni :—Femur (left); figs. 1-4. 
Anterior surface. 
Posterior surface. 
End contour of proximal extremity. 
End contour of distal extremity. 
In figs. 3 and 4 the upper margin corresponds to the posterior 
surface. 
Fig. 
ye go tO 
INDEX TO LETTER REFERENCES. 
Depression for round ligament. 
Trochanter. 
Trochanteric articular surface. 
Pre-trochanteric surface. 
Kcto-trochanteric surface. 
Keto-condyle. 
Kcto-trochanteric tuberosity. 
Intermusceular ridge 
Depressed areas. 
Pneumatic foramen. 
Ento-condyle. 
Popliteal fossa. 
Posterior intercondylar notch. 
Fibular groove. 
Posterior border of ento-condyle. 
Anterior intercondylar ridge. 
Posterior intercondylar ridge. 
Kcto-condylar fossa. 
Rotular channel. 
IN by oR hay 
SyORROAGSMS SSS sooth 
All the figures are half size. 
