On a new Frog from Mossamedes. 109 of head, not reaching origin of anal. Caudal rounded. Caudal peduncle as long as deep. Scales denticulate, 36-39 j^; lateral lines 21-24/13-17. Brownish above, yellowish beneath, with dark brown spots or marblings or with 7 or 8 indistinct dark bars on the body ; a blackish opercular spot; dorsal, anal, and caudal fins with round brown or blackish spots. Total length 160 mm. Several specimens were obtained by Dr. Ansorge. A specimen measuring 215 mm., from the Zambesi, has been submitted to me by Dr. J. D. F. Gilchrist. Closely allied to P. robusta, Gthr. XX. — Description of a new Frog discovered hy Dr. W. J. Ansorge in Mossamedes^ Angola. By G. A. Boulengek, F.K.S. Rana cryptotis. Tongue rather feebly notched behind. Vomerine teeth in two oblique groups between the choanfo. Habit very stout. Head short, snout rounded ; interorbital space narrower than the upper eyelid; tympanum completely hidden under the skin. Fingers short, pointed, first and second equal ; toes short, one-third webbed ; subarticular tubercles of toes very prominent, conical; inner metatarsal tubercle very large, very prominent, shovel-shaped, sharp-edged, at least as long as the inner toe ; a small, round, outer metatarsal tubercle ; a round tarsal tubercle, just below the tibio-tarsal articulation. The tarso-metatarsal articulation reaches the eye. Skin smooth. Pale greyish or browrjish above, with dark-edged grey or brown spots disposed with greater or less symmetry ; an interrupted dark cross-bar between the eyes ; back some-times with white or pink dots ; a light vertebral stretik often present ; hind limbs with dark transverse spots, not forming complete cross-bars ; lower parts white. From snout to vent 31 mm. Numerous specimens were obtained by Dr. Ansorge at Catequero, Pouang Kuma (Dongwennu), and in the Kafitn Swamps. The hidden tympanum and the tarsal tubercle well distin-guish this small frog from R. Delalandii and other allied species from Africa.
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