{ 60. Bucconidæ Puff-birds. { 61. Galbulidæ Jacamars. { 62. Coraciidæ Rollers. { 63. Meropidæ Bee-eaters. { 64. Todidæ Todies. { 65. Momotidæ Motmots. { 66. Trogonidæ Trogons. Sub-order-- { 67. Alcedinidæ Kingfishers. Fissirostres. { 68. Bucerotidæ Hornbills. { 69. Upupidæ Hoopoes. { 70. Irrisoridæ Promerops. { 71. Podargidæ Frog-mouths. { 72. Steatornithidæ The Guacharo. { 73. Caprimulgidæ Goatsuckers. { 74. Cypselidæ Swifts. { 75. Trochilidæ Humming-birds. {96}The Psittaci or parrot tribe are still in a very unsettled state of classification; that recently proposed by Professor Garrod differing widely from the arrangement adopted in Dr. Finsch's monograph of the order. Taking advantage of the researches of these and other authors, the following families are adopted as the most convenient in the present state of our knowledge: 76. Cacatuidæ The Cockatoos. 77. Platycercidæ The Broad-tailed Paroquets of Australia. 78. Palæornithidæ The Oriental Parrots and Paroquets. 79. Trichoglossidæ The Brush-tongued Paroquets and Lories. 80. Conuridæ The Macaws and their allies. 81. Psittacidæ The African and South American Parrots. 82. Nestoridæ The Nestors of New Zealand. 83. Stringopidæ The Owl-parrots of New Zealand. The Columbæ, or pigeons, are also in a very unsatisfactory state as regards a natural classification. The families, sub-families, and genera proposed by various authors are very numerous, and often quite irreconcilable. I therefore adopt only two families; and generally follow Mr. G. R. Gray's hand-list for the genera, except where trustworthy authorities exist for a different arrangement. The families are: 84. Columbidæ Pigeons and Doves. 85. Dididæ The extinct Dodo and allies. The Gallinæ, or game-birds, may be divided into seven families: Fam. Sub-fam.