FAMILY CORACIIDÆ
(Rollers)
Bill corvine in shape; culmen rounded; nostrils near base of upper mandible and hidden by bristly feathers; tail feathers twelve.
54. Corácias (Roller). Bill compressed, straight, with cutting edges; upper mandible slightly hooked at the point; sides of the gape bristled; tarsus short; wings long; first primary a little shorter than the second, which is the longest.
FAMILY MEROPIDÆ
(Bee-eaters)
Bill long; culmen with sharply defined ridge; toes joined for part of length.
55. Mêrops (Bee-eater). Bill long, compressed, slightly curved, slender, with cutting edges, broad at the base; upper mandible keeled, the tip not hooked; tarsus very short; wings long, pointed, second primary the longest; centre tail feathers elongated.
FAMILY UPUPIDÆ
(Hoopoes)