550 MR. G, A. BOULENGER ON LITTLE-KNOWN [May 5, 
Rana CAMERANI. (Plate XXI. fig. 1.) 
Rana camerani, Bouleng. Bull. Soc. Zool. France, 1886, p. 597 ; 
Boettg. Ber. Senck. Ges. 1892, p. 134. 
First described from four specimens collected by Dr. Oscar 
Schneider on Lake Tabizhuri, 8000 feet, and at Achalkalki, and 
preserved in the Berlin Museum, this species has been rediscovered 
in the Karabagh Mountains, around Lake Gokcha, and near Tiflis, 
where it occurs together with R. macrocnemis. Thanks to the 
kindness of Professor Boettger, the British Museum has received 
three specimens—one male from Gilli, L. Gokcha, and two young 
from the C. Karabagh—in exchange from the Senckenberg Museum. 
Their detailed measurements are recorded below. 
R. camerani is very closely allied to R. macroenemis, and more 
material is required before they can positively be pronounced to be 
distinct species. The affinity to R. arvalis is also very great, but 
the small size of the inner metatarsal tubercle in R. camerani is 
sufficient for distinction. 
The vomerine teeth do not differ from those of R. macrocnemis. 
The snout is more pointed and more prominent, as in a typical 
f. arvalis ; the interorbital space is very narrow, one half to two 
thirds the width of the upper eyelid, and considerably narrower 
than the distance between the nostrils; the tympanum measures 
hardly half the diameter of the eye, from which it is separated by 
a distance equal to at least two thirds its diameter. The first and 
second fingers are equal, or the first extends very slightly beyond 
the second; the subarticular tubercles are strong, and the inner 
metatarsal tubercle is oval, measuring two fifths to one half its 
distance from the end of the inner toe; the web between the toes 
is as much developed asin R. macrocnemis; the male in breeding 
attire is, however, still unknown. The tibio-tarsal articulation 
reaches the eye or the nostril; the length of the hind limb between 
the vent and the tibio-tarsal articulation equals the length of head 
and body minus the whole or half the length of the snout; the 
tibia is as long as the foot or the fore limb. The glandular lateral 
folds are strong and very prominent; the distance between them, 
on the scapular region, equals two ninths to one fifth the length 
from snout to vent. 
The coloration is in every respect that of R. arvalis, and 
handsomely striped specimens are also of frequent occurrence; the 
light moustache is strongly marked, extending from the tip of the 
snout to the shoulder. 
é. Yg. Yg. 
millim. millim. millim. 
From snout to vent .... 45 84 32 
Length of head........ 15 11 10°5 
Width of head ........ 16 Hb pel 
Diameter of eye ...... 5 35 35 
Interorbital width...... 2°5 2 2 
From eye to nostril .... 3 2 2 
