604 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
MICROHYLA ELEGANS (Boulenger) 
Engystoma elegans BoULENGER, Catalogue of the Batrachia Salientia s. Ecaudata 
in the collection of the British Museum, ed. 2, 1882, p. 162 (type locality, 
Cérdoba, Veracruz, México). 
Microhyla elegans PARKER, A monograph of the frogs of the family Microhylidae, 
1984, p. 144. 
A single specimen, U.S.N.M. No. 116025, was collected at Pozo de 
la Jicotea, 5 miles southwest of Piedras Negras, Guatemala, near the 
border of Chiapas, México, on June 3, 1939. 
The chief differences between Microhyla elegans and Microhyla usta 
are the absence of an outer metatarsal tubercle; the very strong re- 
duction of the inner tubercle; the elongation of the subarticular 
tubercles, especially of the fourth toe; the narrower, more elongated 
sole; and the flattened tips of the toes, slightly but distinctly wider 
than the proximal part of the digits. 
A median vocal pouch is present, evidenced by two elongate slits in 
the floor of the mouth at the side of the tongue. The anterior of the 
two palatal ridges is somewhat more elongate and narrower; perhaps 
these ridges are a little farther apart than in usta. Beyond the second 
fold the membrane is arranged in numerous, very narrow, longitudinal 
folds or lamellae. ‘The tongue is apparently unnotched behind. 
This species still is extremely rare in collections, six being the 
number of known specimens. The type and two others are known 
from México (Veracruz and Campeche). Stuart (1934, pp. 7-8) has 
reported it from Petén, Guatemala. 
In the male the toes and fingers have sharp-edged lateral fringes 
which bear minute spicules. 
Genus HYPOPACHUS Keferstein, 1867 
HYPOPACHUS CUNEUS CUNEUS Cope 
Hypopachus cuneus Corr, U. 8. Nat. Mus. Bull. 34, 1889, pp. 388-389, fig. 98 
(San Diego, Tex.). 
Hypopachus cuneus cuneus Taytor, Univ. Kansas Sci. Bull., vol. 26, No. 15, 1939 
(1940g), pp. 516-518, pl. 67, fig. A; pl. 68, figs. 7, 7a. 
Six specimens are from Hacienda La Clementina, 4 miles west of 
Forl6n, Tamaulipas (U.S.N.M. Nos. 106245-106250). They were 
found on September 22, 1938, hidden in earth at the bottom of a 
cement vat, the top of which was flush with the surface of the ground. 
Family RANIDAE Bonaparte, 1831 
Genus RANA Linnaeus, 1758 
RANA SIERRAMADRENSIS Taylor 
Rana sierramadrensis TaAyuor, Univ. Kansas Sci. Bull., vol. 25, 1938 (July 10, 
1939b), pp. 387-889, pl. 39, fig. 1 (Agua del Obispo, Guerrero). 
Four perfect topotypes (U.S.N.M. Nos. 114009-114012) were 
