50 KEY TO FAMILIES. 



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



cedinidm: Kingfishebs (Fig. 35), p. 226. 

 £. Two toes in front and two behind. . . . Family Cuculidce : CnoKOOs 



(Fig. 36), p. 224. 



Fig. 37. 



Order XV. Fici> — Woodpeckers. 



Toes four, two in front and two behind, or toes three, two in front and 

 one behind ; bill strong ; tail-feathers stiff and pointed ; nostrils more or 

 less concealed by bristles. . . . Family Piddce: Woodpeckebs (Fig. 37), 

 p. 22r. 



Fie. 38, 



Fig. 40. 



Order XVI. Macrochires. — Goatsuckers, Swifts, and Hdmmingbieds. 

 Feet very small and weak ; bill short and small and mouth large, or bill 

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

 pointed. 

 A. Size comparatively large; plumage variegated, black and brown; 

 middle toe-nail with a oomblike edge. . .' . Family Oaprimulgidm : 

 NiGHTHAWKs, "Whip-poor- WILLS, etc. (Fig. 38), p. 236. 

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

 nail ; tips of the tail-feathers with spines. . . . Family Micropodidce : 

 Swifts (Fig. 39), p. 239. 

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

 . . . Family TrocMlidm : Hummih gbibds (Fig. 40), p. 240. 



