494 SHOUFELDT. [Vot. III. 
in the forearm of Chamea, yet see the difference in the size of 
the skulls of these two birds in Figures 1 and 3. Another way 
we have of contrasting such a matter is by the fact that the 
tibio-tarsus in Chamea is very nearly three times the length of 
its radius, and the tarso-metatarsus is nearly double its length. 
Nothing specially noteworthy is met with in the skeleton of the 
pinion in our subject. Measured from the head of the carpo- 
metacarpus to tip of the most distal phalanx, this division of 
the skeleton of the pectoral limb is nearly as long as the ulna. 
The Bush-Tits have these parts quite in proportion with the size 
of their bodies, but otherwise the form of the bones is pretty 
much the same. 
Parus inornatus (Lophophanes) presents some peculiarities in 
the skeleton of its antibrachium and pinion, for the outer sur- 
face of the proximal third of the shaft of the radius always 
develops a scale-like projecting ledge. While the proximal] pha- 
lanx of the index digit is flat and smooth upon its radial side, 
it is deeply excavated for the entire length of its anconal aspect ; 
and finally, the slender middle digit extends for an unusual dis- 
tance below the main shaft of the carpo-metacarpus (or index 
digit), allowing its rather large and single phalanx to descend to 
a point considerably below the middle of the hinder margin of 
the proximal phalangeal joint of the index finger, whereas, as 
we know, in most birds it is stowed away in the recess at the 
upper third of this joint. Chamea also reveals its parine affini- 
ties in this particular, for the skeleton of its pinion is constituted 
pretty much on the same plan. 
Wrens have their arm-bones a good deal like we find them in 
the Paring, but here a noticeable flattening of the radius always 
seems to be present, and characterizing the proximal moiety of 
the shaft of the bone. 
Accentor modularis offers us nothing peculiar in its skeletal 
wing structure worthy of especial note; it is formed upon a 
strictly passerine type. 
The Pelvic Limb. —So far as the characters of the bones of 
this limb themselves are concerned, they present so few strong 
differential ones to assist us in determining affinities that we 
might with great propriety pass them by at this point, but still 
a word in regard to other matters concerning them will not be 
out of place. In Chamea all the long bones of the pelvic limb 
