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Show 550 MR. G. A. BOULENGER ON LITTLE-KNOWN [May 5 BANA 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. macrocnemis, 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 R. 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 wdiich 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 as in 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. From snout to vent .. , Width of head From eye to nostril ... . <?. millim. 45 15 16 5 2-5 3 Yg. millim. .34 11 11-5 3-5 .. 2 2 Yg. millim. 32 10-5 11 35 2 2 |