414 Mr. G. A. Boulenger on new 
Rana tibetana. 
Vomerine teeth in small oblique groups between the 
choanz and extending a little beyond the level of their poste- 
rior borders. Head much broader than long, much depressed ; 
snout rounded, shorter than the eye, scarcely projecting 
beyond the mouth; canthus rostralis distinct ; loreal region 
very oblique, concave; interorbital region much narrower 
than the upper eyelid ; tympanum distinct, 2 the diameter of 
the eye. Fingers obtuse, first slightly longer than second ; 
subarticular tubercles moderate. Hind limb moderately 
long, the tibio-tarsal articulation reaching the anterior border 
of the eye, the heels strongly overlapping when the limbs 
are folded at right angles to the body; tibia twice in length 
from snout to vent. Toes with the tips swollen into small 
disks, entirely webbed; subarticular tubercles moderate ; a 
very distinct tarsal fold ; inner metatarsal tubercle narrow, 
feebly prominent, ? the length of the inner toe; no outer 
tubercle. Upper parts rough with granules and numerous 
round or oval warts tipped with black horny spinules; a 
feeble fold across the head, behind the eyes; a strong 
glandular fold from the eye to the shoulder; lower parts 
smooth. Brown above, with numerous ill-defined dark spots 
on the back and cross-bars on the limbs, the larger warts 
lighter; a light cross-bar between the eyes; lips with dark 
vertical bars ; lower parts brownish, throat and limbs mottled 
with brown. Male with internal vocal sacs ; arms thick ; 
breast with black horny spines ; similar spines, but more 
crowded, on the inner metacarpal tubercle and on the upper 
surface of the two inner fingers. 
From snout to vent 61 mm. 
A single male specimen from Yin tsin wau, Wassu State, 
Tibet. 
Distinguished from R. gammiet, And., by the distinct 
tympanum, the presence of a tarsal fold, the larger metatarsal 
tubercle, and the presence of vocal sacs; from A. fee, Bler., 
by the swollen tips of the toes and the distinct canthus 
rostralis ; from Jt. yunnanensis, And., by the less prominent 
metatarsal tubercle (fide Anderson) ; from &. rugosa, Schleg., 
by the broader head, the larger metatarsal tubercle, and the 
presence of vocal sacs. 
Rana macrognathus. 
I now regard as deserving specific distinction the frog 
from Upper Burma referred by me to &. dorie, Blgr. (Ann. 
Mus. Genova, [9] xiii. 1893, p. 328, pl. viii. fig. 1), the 
