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Show 564 MR. G. A. BOULENGER ON REPTILES AND [Nov. 15, coloured, the inner colourless and provided with the nuptial This tortion, together with the extreme similarity of the four fingers, renders it difficult to decide, at a first glance, which of the digits are the pre-axial and which the post-axial. The colour of the upper parts is a uniform olive-brown, that of the lower a carneous white. The pupil, in a strong light, is vertically oval; the iris is much obscured by black pigment, except a narrow golden ring round the pupil. The web between the toes is transparent, with the veins forming beautiful arborescent purplish lines. Mr. Boulenger intended to hand over the specimen to Prof. Howes, who, he hoped, would investigate the circulatory, muciferous, and urogenital systems. It was most desirable that such an examination should be made, as nothing was known of the soft anatomy of the Daclylethrida. Prof. Flower exhibited and made remarks on a photograph of a specimen of Rudolphi's Whale (Balanoptera borealis), taken in the Thames near Tilbury, on the 18th October last. The sex had been ascertained to be male. A letter was read addressed to the Secretary by Dr. Emin Pasha, C.M.Z.S., dated Wadelai, April 15, 1887, referring to some collections sent to the British Museum, and offering some account of his observations on Natural History to the Society. The following papers were read :- 1. A List of the Ueptiles and Batrachians collected by Mr. H. H. Johnston on the Rio del Rey, Cameroons District, W . Africa. By G. A. B O U L E N G E R. [Received June 30, 1887.] 1. RHAMPHOLEON SPECTRUM, Buchh. 2. UROBELUS GABONICUS, A. Dum. 3. DIPSADOBOA UNICOLOR, Gthr. 4. CORNUFER JOHNSTONI, sp. n. Tongue with a conical papilla in the anterior part of the median line. Vomerine teeth in two slightly oblique series behind the line of the choanae. Snout rounded, shorter than the diameter of the orbit; canthus rostralis obtuse ; loreal region concave ; nostril nearer the tip of the snout than the eye ; interorbital space nearly as broad as the upper eyelid; tympanum half the diameter of the orbit. Digits terminating in triangular expansions, the diameter of which |