| General Distribution. | |||||
 | |||||
| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
| 1 — — — | — — — — | — — — — | — — — — | — — — — | — — — — |
The Sheath-bills, Chionis (2 sp.), are curious white birds, whose thick bill has a horny sheath at the base. Their nearest ally is Hæmatopus, a genus of Charadriidæ. These birds are confined to the Antarctic Islands, especially the Falkland Islands, the Crozets and Kerguelen's Land.
Family 102.—THINOCORIDÆ. (2 Genera, 6 Species.)
| General Distribution. | |||||
| |||||
| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
| 1 — — — | — — — — | — — — — | — — — — | — — — — | — — — — |
The Thinocoridæ, or Quail-snipes, are small birds, confined to Temperate South America. They have much the appearance of Quails but are more nearly allied to Plovers. The two genera are:—
Attagis (4 sp.), Falkland Islands, Straits of Magellan, Chili, Bolivia, and the High Andes of Peru and Ecuador; Thinocorus (2 sp.), La Plata, Chili, and Peru. (Plate XVI. Vol. II. p. [40].)
Family 103.—PARRIDÆ. (2 Genera, 11 Species.)
| General Distribution. | |||||
| |||||
| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
| — 2. 3 — | — — — — | — — — — | 1. 2. 3. 4 | 1. 2. 3. 4 | 1. 2 — — |
The Parridæ, or Jacanas, are remarkable long-toed birds, often of elegant plumage, frequenting swamps and marshes, and walking on the floating leaves of aquatic plants. They are found in all the tropics. Parra (10 sp.), has the distribution of the family; Hydrophasianus (1 sp.), is confined to the Oriental region.
Family 104.—GLAREOLIDÆ. (3 Genera, 20 Species.)