226 U. 8. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
Sub-Family REGULINAE. 
REGULUS,' Cuvier. 
Regulus, Cuvier, Lecons d’Anat. Comp. 1799—1800, (Agassiz.) (Type Motacilla regulus, Linn., Regulus cristatus, 
Kocn.) 
Cu.—Bill slender, much shorter than the head, depressed at base, but becoming rapidly compressed ; moderately notched 
at tip. Culmen straight to near 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 six. Tail shorter than 
the wings, moderately forked, the feathers acuminate. Colors olive green above, whitish beneath. Size very small. 
I am unable to appreciate any such difference between the common North American Leguli 
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........ccsesseseseereee ss SALTAPA. 
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 Length.| Stretch |Wing.) Tail. | Tarsus. | Middle |Its claw) Bill Along | Specimen 
No. age. of wings. toe. alone. | above. | gape. | measured. 
1943 4,00 |....e0..| 2.30 | 
dO. |.oee. 4.50 7.16 | 2.33 |eccoee 
2573 3.70 |euesceee 2.22 
do. 4.25 6.83 | 2,33 
7180 3.64 | ccccees 2.04 
1758 |. 3516 |lcaivcivces 2.14 
do. 4.16 6.50 | 2.25 
867 3.76 |.ceseee.| 2.32 
do. 3.91 7 2.37 
REGULUS CALENDULA, Licht. 
Ruby-crowned Wren. 
Motacilla calendula, Linn. Syst. Nat. I, 1766, 337.—Forsrer, Phil. Trans. LXII, 1772, 383—Gmetin, Syst. Nat. I, 
1788, 994. 
Sylvia calendula, Latuam, Ind. Orn. IJ, 1790, 549.—Wison, Am, Orn. I, 1808, 83; pl. v, f 3.—Dovucury, Cab. N. 
H. II, 1832, 61; pl. vi. 
Regulus calendula, Licur. Verzeich. 1823, Nos. 408-’9.—Nurrat, Man. I, 1832, 415.—Avpuxon, Orn. Biog. II, 
1834, 546; pl. 195.—Is. Birds Amer. II, 1841, 168; pl. 133. 
Reguloides calendula, Bonar. Conspectus, 1850, 292. 
Phyllobasileus calendula, Capanis, Mus. Hein. 1850-1, 33. 
Regulus rubineus, Vie1tLor, Ois. Am. Sept. II, 1807, 49; pl. civ, ev. 
? Parus griseus, GMevin, Laruam. 
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.) 
