The Troglodytidæ, or Wrens, are small birds, rather abundant and varied in the Neotropical region, with a few species scattered through the Nearctic, Palæarctic, and parts of the Oriental regions, and one doubtful genus in Africa. The constitution of the family is by no means well determined. The South American genera are taken from Messrs. Sclater and Salvin's Nomenclator Avium Neotropicalium.

Tesia (2 sp.), Eastern Himalayas; Pnoepyga (6 sp.), Himalayas to East Thibet, Java; (716 and 723) Troglodytes (15 sp.), Neotropical, Nearctic, and Palæarctic regions to the Higher Himalayas; (697) Rimator (1 sp.), Darjeeling; Thryothorus (13 sp.), South Brazil to Mexico, Martinique, and Nearctic region; Thryophilus (13 sp.), Brazil to Mexico, and North-west America; Cistothorus (5 sp.), Patagonia to Greenland; Uropsila (1 sp.), Mexico; Donacobius (2 sp.), Tropical America; Campylorhynchus (18 sp.), Brazil, and Bolivia to Mexico and the Gila valley; Cyphorhinus (5 sp.), Equatorial South America to Costa Rica; Microcerculus (5 sp.), Brazil and Peru to Mexico; Henicorhina (2 sp.), Peru and Guiana to Costa Rica; Salpinctes (1 sp.), High Plains of Rocky Mountains; Catherpes (1 sp.), Mexico and Rio Grande; Cinnicerthia (2 sp.), Ecuador and Columbia. (760) Sylvietta (2 sp.), Tropical and South Africa,—is placed in this family by Mr. Tristram.

Family 7.—CHAMÆIDÆ. (1 Genus, 1 Species).

General Distribution.
Neotropical
Sub-regions.		Nearctic
Sub-regions.		Palæarctic
Sub-regions.		Ethiopian
Sub-regions.		Oriental
Sub-regions.		Australian
Sub-regions.
— — — —1 — — —— — — —— — — —— — — —— — — —

The bird which forms the genus Chamæa inhabits California; and though allied to the wrens it has certain peculiarities of structure which, in the opinion of many ornithologists, require that it should be placed in a distinct family.

Family 8.—CERTHIIDÆ. (6 Genera, 18 Species.)

General Distribution.
Neotropical
Sub-regions.		Nearctic
Sub-regions.		Palæarctic
Sub-regions.		Ethiopian
Sub-regions.		Oriental
Sub-regions.		Australian
Sub-regions.
— — — —— — 3 —1. 2. 3. 4— — — —1 — 3. 41.2 — —

The Certhiidæ, or Creepers, form a small family whose species are thinly scattered over North America from Mexico, the Palæarctic region, parts of the Oriental region, and Australia, where they are somewhat more abundant. The distribution of the genera is as follows:

Certhia (6 sp.), Nearctic and Palæarctic regions, Nepal, and Sikhim; Salpornis (1 sp.), Central India; Tichodroma, (1 sp.), South Europe to Abyssinia, Nepal, and North China; Rhabdornis (1 sp.), Philippine Islands; Climacteris (8 sp.), Australia and New Guinea.

Family 9.—SITTIDÆ. (6 Genera, 31 Species.)