195 
The proximal phalanx of the middle toe (111. 1) shows well the characters of length and 
slenderness: its proximal articulation differs from that in the Palapteryx ingens by the 
absence of any median vertical ridge: it is a single shallow concavity, a little deepened 
towards the upper part: each angle between the under and lateral surfaces, at the proxi- 
mal expanded end of the bone, supports a rough triangular prominent surface ; the distal 
trochlea repeats the same character of the deep median cleft as in the phalanx 11. 1, but 
the divisions are more symmetrical: the articular surfaces extend further upon the 
upper and under surfaces of the bone than in the Pal. robustus. The second phalanx 
(111, 2) has its proximal articulation divided and adjusted by the development of the 
median prominence to the deeply cleft trochlea of the preceding phalanx: its distal 
trochlea repeats the deep-cleft character. In the third phalanx (111, 3) the distal 
trochlea is much less deeply cleft; and the articular surface of the ungual phalanx 
is correspondingly simplified. This claw-bone (111.4) repeats the long and slender pro- 
portions of that of the second toe: the lower border of each lateral groove is notched, 
which gives a character something like that shown in the corresponding phalanx of the 
Ostrich (11. 4, Pl. XLIX. fig. 7). 
The proximal phalanx of the outer toe (rv. 1) is shorter and broader in proportion to 
ur. 1 and 1,1 than in the Palapteryx robustus: its proximal articulation is more ex- 
tended transversely, is less notched below and less concave: the inner half has the 
greater vertical extent, its lower angle being produced downwards: the shaft is de- 
pressed and slopes away towards the outer side: the distal trochlea is less deeply cleft 
than in 11.1 or 11. 1. 
The second (rv. 2), the third (1v. 3) and the fourth (1v.4) phalanges repeat the cha- 
racters of their homologues in the Palapteryw robustus, in regard to their shortness and 
breadth, and the flattening of their upper surface: the under border of the proximal 
joint of one phalanx underlaps the trochlea of the preceding phalanx, and the distal 
joint of the fourth phalanx is divided by the median groove to which a median ridge on 
the proximal joint of the last phalanx is adapted. 
The extent of the articular surfaces of all the joints of the toes of the Palaptery« dro- 
mioides shows a corresponding freedom and extent of motion of those toes. 
Bones of the Foot of Dinornis rheides. 
The bones of the foot restored and figured in Pl. L. fig. 1, accord by their propor- 
tions with the tarso-metatarse of the Dinornis rheides, the distal trochlee of which are 
quite adapted to the proximal joints of the proximal phalanges. 
The tarso-metatarse of the Dinornis rheides differs from that of the Palapteryx robustus, 
by the absence of any rudiment of the ectocalcaneal process; by the greater elevation 
of the entocalcaneal process and its equality of size with the mesocalcaneal process ; and 
by the presence of a tubercle at the middle of the inner border of the inner concavity for 
the tibia. There is no trace of a depression for the articulation of the back-toe, 
3H 2 
