572 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
mately the same size and have numerous characters in common. 
However, they seem to be distinguishable on the basis of color pattern 
and arrangement of ridges on the back. The latter, however, are 
often dim, or occasionally absent; in such cases color and markings 
alone will serve to distinguish the species. 
There is, of course, a possibility that all are of the same species and 
that the dermal ridges and color patterns are linked; hence, when a 
given color pattern appears it is accompanied by a certain pattern of 
dermal ridges. 
All these forms have been taken in the same locality under the same 
circumstances, together with two other EHleutherodactylus species, 
rhodopis and. hidalgoensis. 
However, in the collection from Chiapas FE. venustus has been taken 
in quantity, but no trace of the other three species appears. A form 
related to dunni, however, does occur. 
Two major varieties of dunni have been examined. The typical 
form is variegated olive, or olive with some darker spots, indistinctly 
barred lips and with the limbs more or less distinctly barred. The 
axillary gland is larger than that in the inguinal region. The tibio- 
tarsal articulation reaches beyond the tip of the snout. 
In the younger specimens there are interorbital darker markings and 
a broad, inverted, V-shaped, dark mark on theshoulder. The upper 
edge of the tympanum is black. 
In the second variety (U.S.N.M. Nos. 116771-116777) the head is 
lighter, sometimes much lighter, than the body. The interorbital 
dark spot is present and if conspicuous the light color behind it forms a 
lunate spot. In these there is no inverted V-shaped spot. 
Behind the light occipital region there is a hair-fine, light line, 
which reaches below anus where it joins a transverse cream line ex- 
tending behind the femora onto the tibia as far as the heel. 
The hairline on back is absent in one specimen. 
A single specimen (U.S.N.M. No. 116778), olive-brown with a 
broad median stripe from snout to vent, is referred to L. dunni with — 
some hesitation. 
ELEUTHERODACTYLUS BEATAE (Boulenger) 
Ficures 60, G; 61, A 
Aylodes beatae BouteEncER, Ann. Mag. Nat. Hist., ser. 7, vol. 12, No. 71, Nov. 
1903, pp. 552-553 (La Perla, near Orizaba [6,000 feet elev.], Veracruz, 
México). 
Eleutherodactylus beatae Ketuoac, U. 8. Nat. Mus. Bull. 160, 1932, pp. 104-105. 
A total of 25 specimens was collected; the following have been 
cataloged: U.S.N.M. Nos. 116756-116757, Cuautlapan, January 16, 
1939, January to February, 1940; U.S.N.M. Nos. 116758-116770, 
