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Show 1899.] BATRACHIANS OF THE MALAY PENINSULA AND SIAM. 891 eyelid. Tympanum distinct, slightly larger than the eye. A prominent tympanic fold. Fingers moderate, 1st slightly longer than 2nd ; toes about three-quarter webbed, the web reaching on the 4th toe " to scarcely beyond the base of the third ultimate joint," on the other toes to the base of the tips, it is deeply emarginate. Tips of fingers and toes dilated into small but distinct disks. Tarsal fold very slight. Subarticular tubercles of toes well developed. Inner metatarsal tubercle elongate, prominent; practically no outer tubercle, a mere white spot (this can be distinguished iu Stoliczka's figure, dorsal aspect, on the right foot). The hind limb being carried forward along the body, the tibio-tarsal articulation reaches to the nostril. Head smooth above, hinder half of the eyelid tuberculated ; skin of back with long longitudinal folds, with numerous small tubercles between them; loreal region, chin, angles of jaws, parts of forearm, and sides of body scattered with small rounded tubercles ; anal region densely studded with small tubercles ; back of tibiae scattered with small tubercles, which are pointed and prominent in life; back of thighs, feet and lower surfaces of throat, body and limbs smooth. Testicles white, 2*3 m m . in length. Size. Length, snout to vent 39 mm.; arm 24; leg 68 ; femur 17*5; tibia 21*5 ; foot 29 ; width of head 19 ; diameter of eye 4*25 ; diameter of tympanum 4*5 ; length of inner metatarsal tubercle 3. Colour (in life). Above bronze (changing from bright yellowish red to dull brown shades), with a bright yellow narrow vertebral line, a black chevron (pointing backwards) between the eyes ; the tympanic fold and some of the longitudinal folds are edged with black. Limbs with dark brown cross-bars. Belly very bright sulphur-yellow; underneath of chin, throat, and limbs yellowish bronze. (In spirit the bronze colour of the upper surfaces turned to olive-brown.) Eye. Pupil black (dark red in some lights), horizontal diamond-shaped. Iris : a very narrow ring of red round pupil, remainder golden, closely speckled with dark bronze, a narrow black vertical line across iris aud also a broad ill-defined black horizontal one. One specimen, d, found in the jungle on Penang Hill, at an elevation of about 2400 feet, 19th March, 1898. It took wonderful long hops. Distribution. Malay Peninsula (Penang). 9. RANA TIGRINA Daud. (Plate LIX. figs. 2, 2 a.) Rana tigrina, Blgr. Cat. Batr. Sal. p. 26 ; S. Flower, P. Z. S. 1896, p. 901. Siamese. " Kop " ; term also applied to other species of frogs. I found this species common on the Bangpakong river (from Tahkamen to Kabin) in March and April 1897, where it was to be found among the sedges by the river's bank ; its croak (a load " opp, opp, opp," repeated 8 or 9 times), which sometimes was |