_Range._--Central Veracruz and northern Oaxaca, Mexico, 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_ (Dumeril, 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).

Genus =Pachymedusa=, new genus

Type species, _Agalychnis dacnicolor_ Cope, 1864.

_Definition._--Fingers and toes having basal webs and lateral fringes;
terminal discs large; first toe shorter than second and not opposable to
others; skin smooth or shagreened, lacking osteoderms; paratoid glands
present, diffuse; palpebral membrane reticulate; iris golden yellow with
black reticulations; skull deep, depth more than 50 per cent of length;
nasals large; frontoparietal fontanelle moderately large; quadratojugal
robust; prevomerine teeth present.

_Range._--Pacific slopes and lowlands from southern Sonora to the
Isthmus of Tehuantepec, Mexico.

_Content._--Monotypic: _dacnicolor_ Cope, 1864 [_alcorni_ Taylor, 1952].

_Remarks._--The generic name is derived from the Greek _pachy_ meaning
thick and the Greek _Medousa_ (Latin, _Medusa_) in reference to
_Phyllomedusa_; the sense implied is the heavy body of _Pachymedusa
dacnicolor_.

Genus =Phyllomedusa= Wagler, 1830

_Phyllomedusa_ Wagler, 1830 [Type species, _Rana bicolor_ Boddaert,
1772].

_Pithecopus_ Cope, 1866 [Type species, _Phyllomedusa azurea_ Cope, 1862
(=_Phyllomedusa hypochondrialis_ Daudin, 1803), by original
designation].

_Hylomantis_ Peters, 1872 [Type species _Hylomantis aspera_ Peters,
1872, by monotypy].

_Phrynomedusa_ Miranda-Ribeiro, 1923 [Type species, _Phrynomedusa
fimbriata_ Miranda-Ribeiro, 1923, by subsequent designation].

_Bradymedusa_ Miranda-Ribeiro, 1926 [Type species, _Bradymedusa
moschada_ Miranda-Ribeiro, 1926 (=_Phyllomedusa rohdei_ Mertens, 1926)
by subsequent designation].

_Definition._--Fingers and toes having greatly reduced webbing or
lacking webs; terminal discs small; first toe shorter than, equal to, or
lon