442 U. Ss. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
throughout, the commissure concave and slightly sinuated, the gonys straight. The claws are 
straighter, or less curved. In other respects of form, &c., there is a ver close relationship. 
Synopsis of the species. 
Back with well defined dark brown streaks. A yellowish superciliary streak from the bill, 
and a distinct median light line along the top of the head. Bill moderate, 
Superciliary stripe decided yellow throughout. 
Fore part of breast only streaked. Bill above, .40; wing, 2.65......P. savanna, 
Similar to last, but larger and darker. Bill above, .50; wing, 2.95. 
P. sandwichensis. 
Breast and fore part of belly thickly streaked. Under parts with a reddish tinge. 
Billattenuated 426 wil. 0 2460.5 cnccsescccenccimiessesesedeesieeeeteersee xen QTLILUILULG. 
Superciliary stripe pale, with little or no yellow. 
Fore part of breast sparsely streaked. Bill slender, elongated.......P. alaudinus. 
Back grayish brown, with very obsolete and rather darker streaks, No distinct median light 
line on the crown. Bill enormously large.............secesscccrscccecvscscresccesseseconsoe lt. TOSITALUS. 
Comparative measurements of species. 
Catal, Species. Locality. 5g he Se F 3g o |o 8 & =| 2 | 2 | Specimen 
No. | a = Se 2 = 4 3 S/Eslt2] = = | measured. 
| &| 4 \a Ele |e | |S fa ele a | = 
6339 | Passerculus rostratus..... | San Diego ..... sees: 3 | 5.30 2.27 | 0.85 | 0.79 | 0.20 | 0.60 | 9.29 | 0.50 | 0.54 | Skin ...... 
GS40 Ni iieesie.s dO . ccccee Oisercieisisis |’sistatefels DO. cccccccceses ref 5.30 2.36 | 0.89 | 0.84 | 0.20 | 0.61 | 0.28 | 0.52 | 0.56 | Skin ...... 
TOTAG 2D Werries 10 eccvels savanna....| Washington, D.C....| @ | 5.40 2.29 | 0.84 | 0.80 | 0.19 | 0.64 | 0.30 | 0.40 | 0.48 | Skin...... 
10260 |...... dO 2 cove edOrece cues | South Llinois.... +. Q 5.40 2.13 | 0.78 | 0.76 | 0.21 | 0.61 | 0.30 | 0.41 | 0.46 | Skin ...... 
Q 4,84 2.14 | 0.76 | 0.73 | 0.17 | 0.60 | 0.30 | 0 39 | 0.44 | Skin....., 
5.25 
5.06 
5.30 
5.60 
6.12 
5.64 
Gab] IG 77 concl aoba00 acd0ad |ecdc0o) fo90069| nbadar settee esses sees | Fresh ..... 
De00)| eee cine 2.76 | 2.30 | 0.81 | 0.78 | 0.22 | 0.62 | 0.31 | 0.42 | 0.44 | Skin.. 
5425)|/,9100)| 2:25 2 sees|erenne| scene [Pe vecs|hececal cevsac|isneaealeumees | Fresh . 
5.14) ..0006 | 2.90 | 2.37 | 0.84] 0.77 | 0.18 | 0.63 | 0.30 | 0.40 | 0.45) Skin... 
D200) Poeiee'e'e 2.50 | 2.03 | 0.77 | 0.72 | 0.19 | 0.59 | 0.28 | 0.40 | 0.44 | Skin.. 
5200]°8.50'l]'2750' |... -n||oecoes S010 oactidd| |boeban Heater Seas hyeled| BEreahieee +c 
5.00 | ..cece 2.66 | 2.24 | 0.79 | 0.76 | 0.20 | 0.62 | 0.30 | 0.42 0.45 | Skin...... 
4.90 |...0..| 2.56 0 | 0.80 | 0.78 | 0.20 | 0.62 | 0.27 | 9.42 | 0.50 | Skin ...... 
| | | 
PASSERCULUS SAVANNA, Bonap. 
Savannah Sparrow. 
Fringilla savanna, Witson, Am. Orn. III, 1811, 55 ; pl. 22, f. 2.—Ip. IV, 1811, 72; pl. 34, f. 4.—Aup. Orn. Biog. 
II, 1834, 63: V, 1839, 516; pl. 109. 
Passerculus savanna, Bon. List, 1838.—Is. Conspectus, 1850, 480.—Cas. Mus. Hein. 1851, 131. 
Emberiza savanna, Aup. Syn. 1839, 103.—Is. Birds Amer. IIT, 1841, 68; pl. 160. 
2 Fringilla hyemalis, Gm. I, 1788, 922.—Licur. Verzeichniss, 1823, No. 250. Gmelin’s description, based on 
Pennant Arctic Zool. II, 376, (winter finch,) applies equally well to a large number of species. 
Linaria savanna, Ricuarpson, List, 1837. 
