I'^S Dr, A* Hall on the Mammals and Birds 



L. excuUtor. Great American Shrike or butcher bird. 

 L. septentrionalis. Gmelin ! Buonaparte ! 

 Collyrio borealis ? Buonaparte ! Baird ! 



v.s.p. Bill horn colour; claws black; irides hazel; eggs 6, 

 ■cinereous white, mottled and streaked at their large end With 

 rufous. 



Dorsal aspect. Crown, nape of neck, interscapular region, and 

 rscapulars, drab slate colour, or French white ; auriculars black, as 

 also the streak in front and behind the orbits and the nuchal 

 bristles ; above and below the orbits a narrow streak of white » 

 small wing coverts light brown, scapulars tipped with white; 

 greater wing coverts black, tipped with brownish white ; rump 

 white ; tail coverts white, with distal halves of the dorsal tint ; 

 tail cuneiform, two central feathers black, two next tipped with 

 white ; the white predominates in the others as far as the outer 

 or lateral feathers, the outer vanes of which are wholly white, the 

 inner vanes half white, the quill half being black; quills of the 

 primaries white — the remainder black, with minute brown white 

 tij)s ; secondaries black, tipped with white. 



Ventral aspect. Dirty brownish white, intersected by linear" 

 zigzag lines of slate brown ; vent, tail and wing coverts white ; 

 primaries and secondaries slate colour ; tail black, verging to 

 slate, except the white of the upper surface, already mentioned, 

 which apears more conspicuous on the ventral aspect. 



4th primary longest ; 3rd a little shorter ; tarsi black, slender ; 

 ■middle toe a little longer than hind toe; claw of hind toe longest 

 and stoutest, all of them grooved ; inner edge of talon of middle 

 toe slightly salient. Length 10 inches; alar expanse about 14 

 inches. 



Genus Muscicapa. 



Gen. char. Bill moderately large, subtriangular, depressed at 

 the base, and compressed towards the tip which is deflected, both 

 mandibles emarginate; nostrils basal, suboval, and partly con- 

 cealed by nuchal bristles ; tarsus as long as the middle toe ; 4th 

 primary longest ; external and middle toes basi connected ; outer 

 .toe not versatile. 



M. tyrannus. Tyrant Fly- catcher. 

 Tyrannus Carolinensis? Baird. 



v.s.p. Bill, tarsi, and claws black; irides hazel. Eggs 5, yel- 

 3owish-white, blotched with brown. 



