226 
U. S. P. R. E. EXP. AND SURVEYS ZOOLOGY — GENERAL REPORT. 
Sub-Family REGULINAE. 
REGULUS, 1 Cuvier. 
Regulus, Cuvier, Lemons d'Anat. Comp. 1799 — 1800, (Agassiz.) (Type Motacilla regulus, Linn., Regulus cristatus, 
Koch.) 
Ch. — Bill slender, much shorter than the head, depressed at base, but becoming rapidly compressed ; moderately notched 
at tip. Culmen straight to netir the tip, then gently curved. Commissure straight ; gonys convex. Rictus well provided with 
bristles ; nostril covered by a single bristly feather directed forwards. Tarsi elongated, exceeding considerably the middle toe, 
and without scutellae. Lateral toes about equal ; hind toe with the claw longer than the middle one, and about half the toe. 
Claws all much curved. First primary about one-third as long as the longest ; second equal to fifth or sis. Tail shorter than 
the wings, moderatelj- forked, the feathers acuminate. Colors olive green above, whitish beneath. Size very small. 
I am unable to appreciate any such difference between the co union North American Iieguli 
as to warrant Cabanis in establishing the genus Phyllobasileus for the calendula. The bristly 
feather over the nostril is perhaps less compact and close, but it exists in a rudimentary 
condition. 
Crown in adult plain olivaceous, with a concealed patch of crimson calendula. 
Forehead and line over the eye white, bordered inside by black, and within this again is 
yellow, embracing a central patch in the crown of orange satrapa. 
Forehead and line through the eye black, bordered inside by whitish, and within this 
again by black, embracing an orange patch in the centre of the crown. cuvieri. 
Comparative measurements of species. 
Catal. 
Species. 
Locality. 
Sex and 
age. 
Length 
Stretcl) 
ofwings. 
VVint(. 
Tail. 
1.90 
Tarsus. 
Middle 
Its claw 
alone. 
Bill 
Along 
gape. 
Specimen 
measured. 
1343 
.10. 
2573 
do. 
7180 
1758 
do. 
do. 
Carlisle, Pa 
3 
4.00 
4 50 
3.70 
4.25 
3.G4 
4.16 
3.76 
3 91 
2.30 
2.33 
2.33 
2.04 
2.14 
2.25 
2.32 
2.37 
0.70 
0.50 
0.15 
0.32 
0.44 
7.16 
do 
O 2 yrs. 
1.84 
0.70 
0.50 
0.14 
n.aa 
n. 49 
6.83 
.1 
Foit SteiJaeoom.... 
....... 
9 
1.52 
1.90 
0.G6 
0.68 
0.46 
0.50 
0.14 
0.15 
0.33 
0.45 
0 44 
6.50 
8 
3 
1.92 
0.70 
0.54 
0.14 
0.36 
0.50 
::::::::::::::::::::::: 
7 
REGULUS CALENDULA, Licht. 
Ruby-crowned Wren. 
Motacilla calendula, Linn. Syst. Nat. I, 1766, 337.— Forster, Phil. Trans. LXII, 1772, 383.— Gmelin, Syst. Nat. I, 
1788, 994. 
Sylvia calendula, Latham, Ind. Orn. II, 1790, 549— Wilson, Am. Orn. I, 1808, 83 ; pi. v, f. 3.— Doughty, Cab. N. 
H. II, 1832, 61 ; pi. vi. 
Regulus calendula, Licht. Verzeich. 1823, Nos. 408- '9.— Ncttall, Man. I, 1832, 415.— Audubon, Orn. Biog. II, 
1834, 546 ; pi. 195.— Ib. Birds Amer. II, 1841, 168 ; pi. 133. 
Reguloides calendula, Bonap. Conspectus, 1850, 292. 
Phijllobasileus calendula, Cabanis, Mus. Hein. 1850- '1, 33. 
Regulus rubineus, Vieillot, Ois. Am. Sept. II, 1807, 49 ; pi. civ, cv. 
? Parus gi iscus, Gmelin, Latham. 
Calendula pennsylvanica, Brisson, III, 1760, 584. 
' Cabanis makes a genus Phyllobasileus for our R. calendula, replacing by it Reguloides of Blyth.— (Museum Heineanum, 
1850, 33.) 
