SYLVICOLIN^. 
47 
coverts ; a narrow black band on the forehead^ extending over the 
eyes ; wings brownisb-black^ margined with blue^ some of the secon- 
daries with bluish-white ; tail glossy black, the outer feather on each 
side nearly all white, the next with its terminal half, and the third 
with its tip of that colour ; lower parts greyish- white. Female similar, 
but with the tints duller, and the black band on the head wanting. 
Male 4^, 6|. 
From Texas northward. Abundant. Migratory, 
Blue-grey Flycatcher, Muscicapa coerulea, Wils. Amer. Om. v. ii. p. 164. 
Sylvia coerulea, Bonap. Syn. p. 85. 
Blue-grey Sylvan Flycatcher, Muscicapa coerulea, Nutt. Man. v. i. p. 297. 
Blue-grey Flycatcher, Muscicapa coerulea, Aun. Orn. Biog. v. i. p. 431. 
FAMILY VIII. SYLVICOLIN^. WOOD-WARBLERS. 
Bill short, or of moderate length, rather slender, some- 
what conical, considerably broader than high at the base, 
gradually compressed toward the end ; upper mandible with 
its dorsal outline straight until near the end, the point very 
narrow, the notches very slight ; lower mandible with the 
angle rather short and narrow, the dorsal line straight, the 
edges somewhat involute, the tip acute. Head moderate, 
ovate ; neck short ; body rather slender. Feet of moderate 
length ; tarsus longer than the middle toe, slender, much 
compressed, with eight anterior scutella, of which the 
upper are blended ; toes rather small, or of moderate size, 
hind toe proportionally stout, outer adherent for a short 
way at the base ; claws moderate, much compressed, arched, 
acute. Plumage generally soft and blended. Wings of 
moderate length. Tail of moderate length, of twelve 
feathers. Tongue of moderate length, sagittate, tapering. 
CEsophagus of moderate width, without dilatation, proven- 
triculus bulbiform ; stomach of moderate size, roundish or 
elliptical, moderately muscular, with the muscles distinct ; 
epithelium dense, longitudinally rugous ; intestine short, 
rather wide ; coeca very small ; cloaca* oblong. Trachea 
simple ; with four pairs of inferior laryngeal muscles. 
