CLASSIFIED INDEX. 167 



CYPSELID^E (SWIFTS). 



Bill very small, without notch, triangular, much broader than high, 

 without bristles, but with minute feathers extending along under 

 margin of nostrils, which are elongated, superior, and close together ; 

 anterior toes cleft to base, each with three joints, and covered with 

 skin and feathers, lateral toes nearly equal to middle ; tail-feathers 

 ten ; wings elongated, falcate. 



Cypselus apus (Hirundo apus) SWIFT, II. 49 



CAPRIMULGID^E (GOATSUCKERS}. 



Bill very short, gape enormously long and wide, opening to beneath 

 or behind the eyes, smooth or armed with strong bristles; secondary 

 quills, in some genera lengthened; toes connected by a movable skin, 

 claw of middle toe pectinated. 



Caprimulgus europceus, NIGHTJAR, III. 13 



CUCULID^E (CUCKOOS}. 



Bill compressed, usually more or less lengthened, and with decurved 

 culmen, bristles at gape few or absent, nostrils exposed without nasal 

 tufts ; tail long and soft, of eight to twelve feathers ; toes in pairs, 

 deeply cleft or not united, the outer anterior toe usually versatile, but 

 directed rather laterally than backward. 



Cuculus canorus (Cuculus hepaticus), CUCKOO, II. 29 



ALCEDINID^l (KINGFISHERS}. 



Head large ; bill long, strong, straight, and sub-pyramidal, usually 

 longer than the head ; wings short ; legs small ; outer and middle toes 

 united for half their length. 



Alcedo ispida, KINGFISHER, I. 121 



PICIDM (WOODPECKERS}. 



Bill long, wedge-shaped; tongue capable of great protrusion; 

 wings rounded, tail feathers ten or twelve, rigid or soft; outer toe 

 turned backward permanently, not versatile laterally. 



Dendrocopus major (Picus major), GREAT SPOTTED WOODPECKER, 

 IV. 69 



Gecinus viridis (Picus viridis), GREEN WOODPECKER, I. 117 

 lynx torquilla (Yunx torquilla), WRYNECK, I. 69 



