Phyllomedusidae Günther 1859 [Type genus, Phyllomedusa Wagler, 1830].
Definition.—Moderately small to large hylids having vertical pupils, n=13 (2n=26) chromosomes, skin containing large amounts of powerful bradykinin-like and physalaemin-like polypeptides, eggs suspended from vegetation above water, and tadpoles have a ventral spiracle sinistral to midline.
Range.—Low and moderate elevations in South and Middle America, including Trinidad, from northern Argentina and northwestern Ecuador to Veracruz and southern Sonora, México.
Content.—Three genera, one of which probably is composite.
Genus Agalychnis Cope, 1864.
Agalychnis Cope, 1864 [Type species, Hyla moreletii Duméril, 1853, by subsequent designation].
Definition.—Fingers and toes at least half webbed; terminal discs large; first toe shorter than second and not opposable to others; skin smooth, lacking osteoderms; parotoid glands, if present, poorly developed and diffuse; palpebral membrane reticulate (except in A. calcarifer); iris red or yellow; skull shallow, depth less than 40 per cent of length; nasals large; frontoparietal fontanelle large; quadratojugals reduced; prevomerine teeth present.
Range.—Central Veracruz and northern Oaxaca, México, southeastward through Central America to northwestern Ecuador; one species disjunct in Amazonian Ecuador.
Content.—Eight species [synonyms in brackets]: annae (Duellman, 1963); calcarifer Boulenger, 1902; callidryas (Cope, 1862) [helenae Cope, 1885; callidryas taylori (Funkhouser, 1957)]; craspedopus (Funkhouser, 1957); litodryas (Duellman and Trueb, 1967); moreleti (Duméril, 1853) [holochroa (Salvin, 1861)]; saltator Taylor, 1955; spurrelli Boulenger, 1913.
Remarks.—Savage and Heyer (1967) provided evidence that A. callidryas taylori (Funkhouser) and A. helenae Cope were junior synonyms of A. callidryas (Cope).