BIEDS — SYLVICOLIDAE — DENDEOICA VIEENS. 
267 
Comparative measurements of species. 
Dendroica virens 
do 
Dendroica occidentals 
do 
Dendroica blackburniae 
Dendn 
Dendroica audubonii. 
Dendroica coronata . . 
Dendroica canadensis 
Dendroica nigrescens. 
Dendroica castanea 
Dendroica pinus ... 
do 
Dendroica pennsylvanica 
Dendroica c;rnilea. 
do 
Dendroica striata. ., 
Dendroica erithachorides 
.do... 
Dendroica maculosa 
Dendroica kirtlandii.. 
Dendroica palmarum. 
Dendroica tigrina .... 
Dendroica discolor. 
Dendroica pensilis . 
.do 
Carlisle, Penn. 
Petaluma, Cal. 
do 
Carlisle 
Northern Mexico. 
Carlisle, Penn. 
Columbia river. 
Carlisle, Penn.. 
Smith Illinois 
WestNorthli.ld, III 
Carlisle, Penn 
do 
Caitliagena, N. G. 
do 
Carlisle, Penn...,. 
Cleveland, Ohio. 
Carlisle, Penn.. . 
do 
Philadelphia 
Savannah, Ga 
Washington, D. C. 
4.91 
5.00 
4.86 
4.56 
4.75 
3.94 
4.50 
5.50 
5.22 
5.00 
4.10 
4.94 
5,32 
Stretch 
nt'wiug- 
Wing. 
Tail. 
Tarsus. 
Middle 
Its elan 
Bill 
Wong 
Specimen 
toe. 
alone. 
above. 
gape. 
measured. 
■ — - 
2.56 
2.24 
0.70 
0.54 
0.15 
0.43 
0.50 
2.75 
Fresh.... 
2.63 
2.24 
0.70 
0.58 
0.16 
0.40 
0.50 
2.66 
Fresh .... 
2.76 
2.20 
0.71 
0.54 
0.14 
0.42 
0.55 
2.83 
Fresh .... 
2.64 
2.32 
0.76 
0.64 
0.18 
0.40 
0.50 
Dry 
3.10 
2.47 
0.76 
0.62 
0.16 
0.41 
0.50 
2.86 
2.46 
0.76 
0.62 
0.19 
0.38 
0.52 
2.52 
2.16 
0.74 
0.58 
0.16 
0.40 
0.50 
2.28 
2.04 
0.66 
0.50 
0.16 
0.40 
0.54 
Dry 
2.98 
2.34 
0.58 
0.18 
0.42 
0.56 
2.74 
2.28 
0.68 
0.56 
0.16 
0.38 
0.52 
2.94 
2.40 
0.74 
0.70 
0.18 
0.46 
0.60 
2 78 
2.28 
0.70 
0.66 
0.19 
0.42 
0.56 
2.54 
2. OS 
0.68 
0.54 
0.18 
0.40 
0.54 
Dry 
2.40 
2.14 
0.70 
0.54 
0.16 
0.40 
0.52 
2.50 
Fresh.... 
2.40 
1.82 
0.64 
0.52 
0.12 
0.40 
0.48 
2.54 
1.96 
0.60 
0.50 
0.14 
0.38 
0.50 
3.08 
2.32 
0.78 
0.04 
0.19 
0.44 
0.56 
2.24 
0.74 
0.60 
0.18 
0.44 
0.52 
3.00 
Fresh .... 
2.16 
0.74 
0.62 
0.18 
0.38 
0.53 
2.92 
Fresh.... 
2.54 
2.20 
0.72 
0.00 
0.18 
0.46 
0.56 
2.66 
Fresh.... 
2.36 
1.84 
0.68 
0.54 
0.16 
0.40 
0.52 
2.33 
Fresh 
2.72 
2.32 
0.80 
0.66 
0.18 
0.48 
0.62 
2.46 
2.00 
0.80 
0.64 
0.18 
0.44 
0.56 
Dry 
2.42 
2.10 
0.68 
0.52 
0.16 
0.40 
0.58 
2.42 
Fresh.... 
2.24 
1.98 
0.66 
0.50 
0.16 
0.38 
0.48 
2.25 
Fresh 
2.56 
3.82 
0.60 
0.16 
0.44 
0.56 
2.72 
2.42 
0.78 
0.66 
0.18 
0.42 
0.53 
2.60 
2.06 
0.72 
0.62 
0.18 
0.42 
0.50 
2.66 
Fresh.... 
2.52 
2.04 
0.70 
0.60 
0.16 
0.38 
0.44 
2.20 
2.04 
0.70 
0.58 
0.16 
0.41 
0.52 
2.24 
0.58 
0.16 
0.46 
0.56 
2.56 
2.30 
0.67 
0.52 
0.16 
0.55 
0.68 
DENDROICA VIRENS, B air d . 
Black-throated Green Warbler. 
Motadlla virens, Gmelin, Syst. Nat. I, 1788, 985. 
Sylvia virens, Latham, Ind. Orn. II, 1790, 537.— Vieillot, Ois. Am. Sept. II. 1807, 33 ; pi. xciii.— Wilson, Am. 
Orn. II, 1810, 127 ; pi. xxvii, f. 3.— Bonap. Obs. Wils. 1826, No. 146.— Nuttall, Man. I, 1832, 
376 — Acd. Orn. Biog-. IV, 1838, 70 ; pi. 399. 
Sylvicola virens, "Swainson," Jard. ed. Wils. 1832.— Bonap. List, 1838.— Aud. Syn. 1839, 55.— Ib. Birds Amer. 
II, 1841, 42 ; pi. 84 — Reinhardt, Vid. Med. for 1853, 1854, 72, 81. 
Rhimanphus virens, Cabanis, Mus. Hein. 1851, 19.— Ib. Journ. Orn. Ill, 1855, 474. 
Sp. Ch. — Male — Upper parts, exclusive of wing and tail, clear yellow olive green, the feathers of the back with hidden 
streaks of black. Forehead and sides of head and neck, including a superciliary stripe, bright yellow. A dusky olive line 
from the bill through the eye, and another below it. Chin, throat, and fore part of breast, extending some distance along on 
