200 BATRACHIA SALIENTIA. 
distinctly emarginate and not extending to the tips. Only one metatarsal tubercle, 
which is narrow and rather short. Hind limb, without. tarsus, as long as, fourth toe 
(from metatarsal joint) four-sevenths of the length of, the body. Interorbital space 
narrow, not quite half the width of the upper eyelid. ‘Tympanum nearly as large as 
the eye. Back with a narrow glandular fold on each side, and, like the sides, with 
numerous tubercles and short glandular tracts. Greenish-olive, with numerous large 
black spots, irregular in shape, and edged with light green. Legs with cross-bars. 
Lower parts whitish. 
The type from Presidio is an adult female, 70 millim. long; but three other examples, 
collected by Forrer at Ciudad, clearly belong to the same species. Of these latter, two 
are adult females, and one a half-grown male with the inner vocal sacs but little 
developed. In a perfectly mature condition this specimen would have had external 
vocal sacs, of which already traces are visible. 
4, Rana omiltemana, sp. n. (Tab. LXI. fig. A.) 
Hab. Mexico, Omilteme in Guerrero 8000 feet (4. H. Smith). 
Head of moderate size, with the snout rather pointed. Tympanum as large as, and 
close to, the eye. Vomerine teeth in two very oblique (sometimes almost longitudinal) 
series, which extend backwards beyond the level of the hind margin of the choane. 
First finger extending beyond the second. ‘Toes with the web distinctly emarginate 
and not reaching the tips; only one (the inner) metatarsal tubercle, which is narrow 
and short. Hind limb, without tarsus, as long as, fourth toe (from metatarsal joint) 
two-thirds of the length of, the body. Back with a narrow glandular fold on each 
side; upper eyelid not granulated. Greyish-brown, with rather small rounded or 
subquadrangular dark spots on the back ; small black dots scattered between the spots, 
a blackish line along the canthus rostralis. Hind limbs with cross-bars; preanal 
region reddish. Lower parts whitish; throat sometimes mottled with black. 
I have seen five adult males. ‘Their vocal sac is small, but there is generally an outer 
vocal sac developed between the tympanum and shoulder-joint. 
Distance between snout and vent . . . . . . . . 60 millim. 
Diameter of tympanum . . 3 
Length of hind limb to tibio- tarsal joint 2 oe ew ew . 60 =, 
Distance from heel to end of foot . . . .. . S| ,, 
9 of metatarsal joint from tip of fourth t toe. . . 387 ,, 
f. omiltemana shows resemblances to several other species, e. g. Rana halecina, 
fh. sylvatica, but perhaps to no other more than to R. clamata, from which it differs, 
inter alia, by a relatively shorter second finger and by its smaller size. 
