No. 3-] POSITION OF CHAMAA. 481 
Serving a specimen of Psaltriparus plumbeus, as in the fore- 
going specimens, we at once recognize how very much it agrees 
in form with Chamea, and how it differs from Parus tnornatus 
griseus. Once more we find the disproportionately long thighs 
and legs, with the short, thickset neck, though in Psadtriparus 
the pectoral limbs are relatively larger with respect to the size 
of the body than they are in Chamea. 
The pattern of the several pterylographical tracts are almost 
identically the same in these two genera. 
With respect to form and pterylography the Chickadees, as 
represented by Parus gamdbclt, seem to offer the precise inter- 
mediates between Chame@a and P. 2. griseus (Lophophanes), or 
between Psaltriparus and the latter. For in them we find a 
harmonious balance between limbs and body, though the pelvic 
pair are rather long. The neck is proportionately longer, and 
the head moderately smaller. Indeed, one might say in the 
body of this Chickadee there are really no proportional discrep- 
ancies, any more than there are in the form of the body in an 
average Sparrow. This mountain Chickadee likewise shows 
some departure in its pterylography, for the ventral tracts are 
much narrowed ; the saddle of the spinal tract lozenge-shaped 
again, while quite a broad band of feathers, several rows at 
least, connect this latter with the dorsal caudal pteryla. All the 
Tits I have thus far plucked have the skin of the head, with the 
exception of that covering the throat, of a dark purplish hue; 
and I am inclined to think that this is normal with them. 
At some other time the writer has it in his mind to give the 
anatomy of the genus Sz¢fa ; and as there can be no very inti- 
mate affinity between it and Chamea, we will not take it into 
consideration here. This should not debar us from taking a 
glance at such a form as Regulus satrapa, and I am under obli- 
gations to Mr. H. K. Coale of Chicago for alcoholic specimens 
of this species. After one has been carefully plucked its diminu- 
tive body calls up to us Psaltriparus, but not so its form ; for 
in Regulus we have the true sylvicoline contour, with its far 
more acutely conical head, the deep-set eyes, the justly propor- 
tioned limbs for the size of the body, which latter is robust, 
broad, showing evidences in front of the more prominent keel 
of the sternum. 
Regulus has a large, lozenge-shaped saddle in its spinal tract ; 
