50 



KEY TO FAMILIES. 



A. Middle and outer toes joined for half their length. . . . Family Al- 



'/<i : KINOKI^HKKS i Fig. :>."> i, [i. L'-_';. 



S. Two toes in front and two behind. . . . Family Cuculidce; CUCKOOS 

 (Fig. 36), p. 224. 



Fio. 37. 



Order XV. PicL WOOBPECKI 



Toes four, two in front and two l.eliind, or toes throe, two in front nnd 

 one behind; bill strong; tuil-fratht TS still' UIK! pointed; nostrils more or 

 less conceaK-d by bristles. . . . Family l'i<id<t: WoODHOEXM (Fig. 37)| 

 p. 'J-'T. 



Fie;. 3S 



Fio. 40. 



Order XVI. M acrochires. GOATSTTKEUP, SWIFTP, nnd HIMMIXOBIRDS. 



Feet very small and \\rak; bill short and small and mouth lanre. or bill 

 long and exceedingly slender and mouth small ; wings generally lon^ and 

 pointed. 



A. Sixe eomparatively large; plumage variegated, black and brown; 

 middle toe-nail with a comblikc edge. . . . Family t'<if,rintnliii,l,i : 

 NIC;IITIIAWKS. Wnii'-i'ooR-wiLLs, ete. (Fig. 38), p. 236. 



B. Size medium ; plumage sooty black ; no comb on the middle toe- 

 nail; tips of the tail-feathers with spine.-. . . . Family Micropodidx : 

 SWIFTS (Fig. 89), p. MA 



C. Size very small ; upper parts shining irreen bill long and slender. 

 . . . Family Trocltilida : HriiJiiN<ii;n:i>s (Fig. 40), p. 240. 



