310 Dr, A, Hall on the Mammals and Birds 



Ventral aspect. A semicircular spot over the eye, chin, throat 

 and auriculars bluish white tinged with blue, darkest on the 

 throat at the mesial line ; a crescentic spot on the breast, ascend- 

 ing upwards and.terminating behind the auriculars ; belly and vent 

 grey, lighter on the vent ; wing coverts blue ; tail coverts white, 

 5th primary longest ; 6th next ; 4th and 7th subequal ; 2nd 

 and 9th equal ; 1st considerably shorter than the secondaries. 

 Length 11 J- inches ; alar expanse 16 inches; length of tail 5f 

 inches ; length of bill 1 inch 1 line. A very elegant bird. The 

 whole dorsal aspect being very glossy. 



C. Canadensis. Canada Jay. 

 Perisoreus Canadensis. Baird ! 

 v.s.p. Bill, legs and feet black; irides hazel; eggs 3 to 4, 

 lilac. 



Dorsal aspect. Frontlet, and front half of the crown dirty 

 white, changing to blackish brown on the hind part of the crown 

 and nape of the neck; back, rump, scapulars and wing coverts, 

 slate grey ; primaries and secondaries blackish brown tipped with 

 dirty white, and edged with slate colour on the outer vanes ; tail 

 cuneiform, slate grey, approaching lead colour, tipped with soiled 

 white. 



Ventral aspect. Auriculars, sides of the throat, chin and throat 

 soiled white, the shafts prolonged in a filiform state beyond the 

 vanes and black, causing a hairy appearance beyond the feathers. 

 This also occurs in the C. cristatus. Breast, belly, wing and tail 

 coverts brownish grey. 



5th primary longest ; 4th and 6th equal ; Srd a line shorter 

 than the Tth ; 2nd shorter than the 8th ; 1st shorter than the 

 secondaries. Length 11 inches ; alar breadth 16 inches. 

 Fam. IV. Tenuirostres. 

 Genus Sitta. 

 Gen. char. Bill straight, attenuate, awl-shaped and acumin- 

 ate ; upper and lower mandibles recurved from the centre ; nos- 

 trils basal, lateral, rounded, and concealed by nuchal bristles ; 

 tongue horny ; feet robust, 3 toes before and 1 behind, exterior con- 

 nected to the middle at its base ; hind toe long with a strong 

 hooked nail ; tail of twelve feathers of moderate length, short 

 in some species ; 2nd, Srd and 4th primaries longest. 

 S. Carolinensis. White-bellied Nuthatch. 

 S. Carolinensis. Baird 1 

 v.s.p. Upper mandible, and distal half of the lower, black ; 



