SPECIES, 
1. Chamea fasciata. 
2. Psaltriparus plumbeus. 
3. Campylorhynchus brunneicapillus. 
GENERAL FORM OF THE 
SKULL. 
Brain-case ample for size of 
bird; not ae vertically 
compressed. Skull somewhat 
acutely produced — SLORY 
and superior mandible slightly 
decurved, 
Brain-case = ditto. Skull 
less acutely produced ante- 
riorly as compared with 
Chamea ; superior mandible 
only slightly decurved. 
EXTERNAL NARIAL 
APERTURE OF SKULL, 
Each rathera large, lon- 
gitudinally placed, sub- 
elliptical opening. 
ditto. 
Brain-case less ample as 
compared with Chamea ; 
somewhat vertically com- 
ressed. Skull proportionate- 
ly very much more produced 
anteriorly than in Chamea, 
Superior mandible decurved, 
ditto. 
4. Auriparus flaviceps. 
5. Catherpes m. conspersus. 
6. Parus i. griseus (Lophophanes). 
Brain-case ample for size of 
bird: not vertically com- 
pressed. Facial portion short 
and acute, Superior mandi- 
ble slightly decurved. 
Brain-case ample, and 
markedly compressed in ver- 
tical direction. Skull much 
produced anteriorly; superior 
mandible slightly decurved. 
Each subcircular in 
outline. Very different 
from Cham@a or the 
Bush-Tits. 
Each a long, narrow 
subellipse in outline. 
Brain-case rather large, and 
semiglobular in form. Face 
of skull short; superior osse- 
ous mandible in no ways de- 
curved, 
. Troglodytes a. parkmanii. 
_ 
8. Salpinctes obsoletus. 
9. Aigithaliscus erythrocephalus, 
Brain-case rather small 
comparatively; slightly com- 
pressed. Skull produced an- 
genEEY Superior osseous 
mandible decurved. 
Each subcircular in 
outline. 
Each a large, longitudi- 
nally placed, subelliptical 
opening. 
INTERORBITAL 
SEPTUM. 
Shows a large central 
vacuity, and another 
similar opening above. 
VoMER. 
Swelled anteriorly 
where it is truncated 
and mesially notched. 
TABEE. 
PALATINES. 
Rounded postero-ex- 
ternal angles; anterior 
limbs very slender. 
MAXILLO-PALA- 
TINES. © 
Each mesial end rath- 
er large, flat, thin, and 
squarish. Not in’con- 
tact with vomer, 
ditto. 
ditto. 
ditto. 
ditto. 
With notably small 
vacuities in it. 
Much the same. 
More uniform in cal- 
ibre throughout. Onl 
a shallow rounded note! 
in front. 
Postero-external an- 
gles inclined to be more 
squarish, otherwise dit- 
to. 
Somewhat produced 
and pointed postero- 
external angles. Ante- 
rior limbs slender, 
Vertically com- 
pressed; enlarged ante- 
riorly and unnotched. 
Much as in the typi- 
cal Wrens generally. 
Narrow -leaf-shaped, 
and so fornted in front. 
As in Campylorhyn- 
chus. 
Appears to be doubly 
notched in front, other- 
wiseas in typical Wrens, 
ditto. 
ditto, 
Brain-case fairly ample; 
slightly compressed vertically; 
moderately produced anterior- 
Wi superior mandible slightly 
lecurved, 
Each rather large, sub- 
elliptical. 
ditto. 
ditto. 
Postero-external an- 
gles produced as Jong, 
sharp spines. 
Postero-external an- 
gles ot produced, 
though angular. Ante- 
rior limbs /ong and 
slender, 
Short: postero-ex- 
ternal angles truncate. 
Anterior limbs compar- 
atively stouter. 
As in Campylorhyn- 
chus. 
Quite similar; mesial 
paddles comparatively 
thicker. 
Mesial ends narrow 
and longitudinally pro- 
duced, Quite different 
from Chamea. 
Much as in Chamea. 
As in Campylorhyn- 
chus. 
MANDIBLE. 
Moderate V in out- 
line; rather feeble; a 
fair-sized, elliptical ra- 
mal vacuity. The base 
slightly decurved. 
ditto. 
Acute V in outline; 
rather strong, and de- 
curved. Ramal vacui- 
ty absent. 
V-shaped ; subcircu- 
lar ramal vacuity pres- 
ent; angular processes 
markedly produced be- 
hind. 
Acute V-formed; de- 
curved; feeble, and ra- 
mal vacuity exceeding- 
ly minute. 
SHOULDER-GIRDLE. 
STERNUM. 
PELVIs. 
Coracoids long and 
slender, shafts straight 
and _ subcylindrical. 
Scapula: curved out- 
wards pestenony: Hy- 
pocleidium of Ustarctita 
small. 
ditto. 
Coracoid proportion- 
ately very much short- 
er, others nearly ditto 
for the remaining bones 
of the arch, 
Coracoids not strictly 
parine. Scapul rather 
smartly bent at posteri- 
or thirds ; hypocleidium 
comparatively larger. 
Bones all strikingly 
slender; scapula short 
and dent atends; hypo- 
cleidium of furcula mi- 
nute. 
Two-notched; sub- 
oblong in outline; shal- 
low carina, lofty costal 
processes; large bifur- 
cated manubrium. 
ditto; carina propor- 
tionally somewhat deep- 
er. 
Proportionately more 
oblong than in Cha- 
mea ; otherwise ditto. 
Tlia meet over sacral 
crista; a double parial 
row of pits down ven- 
tral surface of sacrum. 
Ilia very nearly meet 
over sacral crista; oth- 
erwise ditto. 
ditto; sacral row of 
pits nearly obsolete. 
ditto to last, but its 
keel — comparatively 
much deeper than in 
Chamea. 
Square in outline; 
carina shallow, and 
withal the bone flatter 
than in Chamea. 
Mesial ends Jarge, 
squarish, thin, and flat: 
not touching vomer, 
As in Campylorhyn- 
chus. 
Strong; a V in form; 
large subelliptical ra- 
mal vacuities, 
Rather feeble; a V- 
shaped one with asmal/ 
elliptical ramal vacuity. 
ditto. 
As in Chameaa, 
Much as in Psaltr?- 
parus. 
As in Psaltrifarus. 
ditto. 
Each free mesial end 
flat, thin, and squarish. 
Ramal vacuity absent. 
Short, slender cora- 
coid; scapule narrow, 
with ends curved out- 
ward; _hypocleidium 
rather large, 
Like the typical 
Wrens, and with the 
hypocleidium of furcula 
larger. 
ditto. 
Oblong; compara- 
tively deep carina; 
large, broad costal pro- 
cesses. 
Suboblong in out- 
line; carina of moder- 
ate depth. Processes 
all well developed, 
ditto. 
Much as in the Bush- 
Tits. 
Resembles Psaltri- 
parus plumbeus. 
Quite as we find it in 
the U.S. Bush-Tits. 
Tlia well separated 
from sacral crista. Pits 
of sacrum beneath, 
scarcely perceptible. 
Tlia do not meet sa- 
cral crista. Pits on 
sacrum nearly obsolete. 
Tlia rather widely sep- 
arated from sacral cris- 
ta; rows of sacral pits 
distinct, 
Tlia well separated 
from sacral crista. Pits 
beneath sacrum very 
marked. 
ditto. 
Ilia meet the sacral 
crista. The double row 
of pits present. 
REMARKS, 
Has the habit of occasionally carrying tail 
erect like a Wren (Gambel); ‘inhabits 
“shrubby and weedy places, is restless and 
active, expert in eluding observation, and 
clamorous in resenting intrusion of its haunts, 
with harsh, scolding notes” (Coues), Ex- 
ternal characters are given in another Table 
(antea). 
Gregarious at certain seasons. Nearly all 
Titmice have a scolding note wherewith they 
greet intruders who chance near their nests, 
or in many cases, even their haunts. 
A large Wren, approaching Harforhyn- 
chus in its structure. 
A Tit, nearest related to Psaltriparus 
among our United States Parrde, but with 
mutch in its structure connecting it with the 
genus Compsothlyprs among the Mniotilt:- 
dz. Almost a form that stands between the 
two families referred to. 
A peculiar species of Wren, having a skel- 
eton wherein the skull by its fatness at once 
distinguishes it from other genera of Wrens 
in our United States ayifauna. 
Tits which are osteologically quite distinct 
from any other genus of the Parrd@ of the 
United States, and equally so from Chamea. 
A typical troglodytine species. 
Osteologically, this Wrenis nearer Cather- 
fes in its affinity than it is Campylorhyn- 
chus. 
This little Titmouse from the N. W. Hima- 
layas, osteologically comes near our genus 
Psaltriparus, and in some particularss es- 
pecially in the skull, nearer Chamea, 
