Phyllomedusa (3 sp.), South America to Paraguay; Chirodryas, Australia; and Pelodryas (3 sp.), Moluccas, New Guinea and Australia.
Family 17.—HYLIDÆ. (11 Genera, 94 Species.)
| General Distribution. | |||||
 | |||||
| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
| 1. 2. 3. 4 | 1. 2. 3. 4 | 1. 2. 3 — | — — — — | — — 3 — | 1. 2 — — |
The Hylidæ are glandless Tree Frogs with a broadened sacrum. They are most abundant in the Neotropical region, which contains more than two-thirds of the species; about twenty species are Australian; six or seven are Nearctic, reaching northward to Great Bear Lake; while one only is European, and one Oriental. The genera are:—
Hyla (62 sp.), having the range of the whole family; Hylella (1 sp.), Ololygon (1 sp.), Pohlia (2 sp.), Triprion (1 sp.), Opisthodelphys (1 sp.), and Nototrema (4 sp.), are South American; while Trachycephalus (8 sp.), is peculiar to the Antilles, except one South American species; Pseudacris (1 sp.), ranges from Georgia, United States, to Great Bear Lake; Litoria (7 sp.), is Australian and Papuan, except one species in Paraguay; Ceratohyla (4 sp.), is only known from Ecuador.
Family 18.—POLYPEDATIDÆ. (24 Genera, 124 Species.)
| General Distribution. | |||||
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| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
| 1. 2. 3. 4 | — — 3 — | — — 3. 4 | 1. 2. 3. 4 | 1. 2. 3. 4 | 1. 2. 3 — |
The Polypedatidæ, or glandless Tree Frogs with narrowed sacrum, are almost equally numerous in the Oriental and Neotropical regions, more than forty species inhabiting each, while in the Ethiopian there are about half this number, and the remainder are scattered over the other three regions, as shown in the enumeration of the genera:—
Ixalus (16 sp.), Oriental, except one in Japan, and one in Western Polynesia; Rhacophorus (7 sp.), and Theloderma (1 sp.), are Oriental; Hylarana (10 sp.), Oriental, to the Solomon Islands and Tartary, Nicobar Islands, West Africa, and Madagascar; Megalixalus (1 sp.), Seychelle Islands; Leptomantis (1 sp.), Philippines; Platymantis (5 sp.), New Guinea, Philippines, and Fiji Islands; Cornufer (2 sp.), Java and New Guinea; Polypedates (19 sp.), mostly Oriental, but two species in West Africa, one Madagascar, two Japan, one Loo-Choo Islands, and one Hong Kong; Hylambates (3 sp.), Hemimantis (1 sp.), and Chiromantis (1 sp.), are Ethiopian; Rappia (13 sp.), is Ethiopian, and extends to Madagascar and the Seychelle Islands; Acris (2 sp.), is North American; Elosia (1 sp.), Epirhixis (1 sp.), Phyllobates (9 sp.), Hylodes (26 sp.), Hyloxalus (1 sp.), Pristimantis (1 sp.), Crossodactylus (1 sp.), Calostethus (1 sp.), Strabomantis (1 sp.), and Leiyla (1 sp.), are Neotropical, the last two being Central American, while species of Hylodes and Phyllobates are found in the West Indian Islands.
Family 19.—RANIDÆ. (26 Genera, 150 Species.)