_Order I._ ACCIPITRES.

41. _Vultur_, vultures. Beak hooked; head bare: 8 species.

42. _Falco_, eagles and hawks. Beak hooked; head feathered: 32 species.

43. _Strix_, owl. Beak hooked, feathers at its base directed forwards: 12 species.

44. _Lanius_, shrike. Beak straightish, notched: 26 species.

_Order II._ PICae.

45. _Psittacus_, parrots. Beak hooked; upper mandible furnished with a cere: 47 species.

46. _Ramphastos_, toucan. Beak very large, hollow, convex, serrated; both mandibles incurved at the tip: 8 species.

47. _Buceros_, hornbill. Beak convex, curved, cultrate, large, serrated; forehead covered with a h.o.r.n.y plate: 4 species.

46. _Buphaga_, beef-eater. Beak straight, somewhat quadrangular; the mandibles bulging: 1 species.

49. _Crotophaga_, plantain-eater. Beak compressed, half-eggshaped, arched, keeled on the back: 2 species.

50. _Corvus_, crows. Beak convex, cultrate; nostrils covered by rec.u.mbent bristly feathers: 19 species.

51. _Coracias_, roller. Beak cultrate, the tip incurved, not covered with feathers at the base: 6 species.

52. _Oriolus_, oriole. Beak conical, convex, straight, very acute; upper mandible slightly longer, and indistinctly notched: 20 species.

53. _Gracula_, grakle. Beak cultrate, convex, bareish at the base: 8 species.

54. _Paradisea_, birds of Paradise. Beak covered with the downy feathers of the forehead; feathers of the sides long: 3 species.

55. _Trogon_, curucui. Beak shorter than the head, cultrate, hooked, serrated: 3 species.

56. _Bucco_, barbet. Beak cultrate, laterally compressed, notched at the tip, incurved, opening to beneath the eyes: 1 species.

57. _Cuculus_, cuckoo. Beak roundish; nostrils with a prominent margin: 22 species.

58. _Yunx_, wryneck. Beak roundish, sharp pointed; nostrils concave: 1 species.

59. _Picus_, woodp.e.c.k.e.r. Beak angular, straight, the tip wedgeshaped; the nostrils covered with rec.u.mbent bristly feathers: 21 species.

60. _Sitta_, nuthatch. Beak awlshaped, roundish, straight: 3 species.

61. _Todus_, tody. Beak awlshaped, a little flattened, obtuse, straight, with spreading bristles at the base: 2 species.

62. _Alcedo_, kingsfisher. Beak three cornered, thick, straight, long: 15 species.

63. _Merops_, bee-eater. Beak curved, compressed, keeled: 7 species.

64. _Upupa_, hoopoe. Beak arcuate, convex, a little compressed, rather obtuse: 3 species.

65. _Certhia_, creeper. Beak arcuate, slender, acute: 25 species.

66. _Trochilus_, humming-bird. Beak slender, longer than the head, its tip tubular: 22 species.

_Order III._ ANSERES.

67. _Anas_, swans, geese, and ducks. Beak lamellated at the margin, convex, obtuse: 45 species.

68. _Mergus_, merganser. Beak denticulate, cylindrical, the tip hooked: 6 species.

69. _Alca_, auk. Beak short, compressed, convex, furrowed; the lower mandible with a prominent angle: 5 species.

70. _Procellaria_, petrel. Beak a little compressed; the upper mandible hooked, the lower channelled and compressed at the tip: 6 species.

71. _Diomedea_, albatross. Beak straight; upper mandible hooked at the tip, lower abrupt: 2 species.

72. _Peleca.n.u.s_, pelican, gannet, s.h.a.g. Beak straight, the tip hooked, unguiculate: 8 species.

73. _Plotus_, darter. Beak straight, sharp pointed, denticulate: 1 species.

74. _Phaeton_. Beak cultrate, straight, ac.u.minate: 2 species.

75. _Colymbus_, diver. Beak slender, straight, sharp pointed: 11 species.

76. _Larus_, gull. Beak straight, cultrate, the tip a little hooked; the lower mandible with an angular prominence: 11 species.

77. _Sterna_, tern. Beak slender, nearly straight, acute, compressed: 7 species.

78. _Rynchops_, skimmer. Beak straight; upper mandible much shorter, lower abruptly terminated: 2 species.

_Order IV._ GRALLae, Waders.

79. _Phoenicopterus_, flamingo. Beak incurvated as if broken, denticulate; feet webbed: 1 species.

80. _Platalea_, spoonbill. Beak flattish, the tip dilated, rounded, and flat: 3 species.

81. _Palamedea_, screamer. Beak conical; the upper mandible hooked: 2 species.

82. _Mycteria_, jabiru. Beak acute; lower mandible trigonal, ascending; upper three cornered, straight: 1 species.

83. _Cancroma_, boatbill. Beak bulging; the upper mandible resembling a boat with the keel uppermost: 2 species.

84. _Ardea_, cranes and herons. Beak straight, acute, long, a little compressed, with a furrow from the nostrils to the tip: 26 species.

85. _Tantalus_, ibis. Beak long, slender, arcuate; face bare: 7 species.