jeje) SHUFELDT. (VoL. III. 
as long comparatively as it is known to be in other passerine 
birds, and in this particular it curiously approaches the Swal- 
lows. 
Neither w/ma nor radius, nor the ossicles of the carpal joint, 
present anything worthy of special note. The carpo-metacarpus 
is characterized by a rounded laminar process projecting from 
the edge of its main shaft upon the palmar aspect, at the prox- 
imal third, which slightly overlaps the auxiliary shaft of the 
bone, or the shaft of the middle metacarpal, which, as we know, 
fuses with the carpo-metacarpus. Such a process is also present 
in certain Ga//ine, where the writer has figured it.! 
Two points more: the form of the proximal phalanx of the 
index digit is to be noted, it being flat upon its palmar, and pro- 
foundly excavated upon its anconal aspect; the remaining is, 
the terminal phalanges of the digits in the Passeres do not, so 
far as I am aware, ever support claws, and to this rule Szadza 
forms no exception. 
With respect to the skeleton of the pelvic Limb, its salient 
characters are thoroughly known to the morphologist, and we 
wish here to note simply the fact that in Sza/za, as in other 
passerine birds, the fated/a is always present, and the fdula 
always a comparatively short and filliform bone which never fuses 
with the tibio-tarsus. My memoir on the osteology of Lanzus 
gives figures and the usual forms assumed by all these bones of 
the extremities, and they vary but very little throughout the 
group. 
Figures 3 and 26 of the Plates give views of the skull of Hes- 
perocichla nevia, and when we come to compare that part of the 
skeleton with our skull of Sza/za, we are surprised to see how 
much they really are alike; indeed, the skull of the Bluebird 
would nearly answer for a miniature of the skull of the Varied 
Robin. It would be sinking quite to trivial details to attempt’ 
to enumerate the insignificant departures in one from the other. 
The superior osseous mandible in Hesperocichla is straighter 
than it is in Sza/za, and a swell occurs in its tomia beneath the 
narial apertures (Fig. 26), and were a series of this skull reduced 
to the size of an equal series of skulls of Szadza, this character 
might be, if constant, sufficiently evident to enable us to make 
1 SHUFELDT, R. W., Osteology of the North American Tetraonide, Plate VIL, 
Fig. 58. 
. 
