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Show 470 MR. G. A. BOULENGER ON THE [Apr. A^» runs across the gastro-hepatic ligament at a point about opposite to the entrance of the median epigastric vein, which latter has already been referred to. The remaining structural features to which I call attention are only two. As in Tiliqua *, the meso-rectum divides the two vena? renales revehentes from each other. The position of the kidneys resembles that of Varanus rather than Tiliqua or Iguana, inasmuch as they are not hidden by the pelvic bones. 3. On the Characters and Affinities of the Triassic Reptile Telerpeton elginense. B y G. A. B O U L E N G E R , F.R.8., V.P.Z.S. [Received March 22,1904.] (Plates XXX.-XXXII.f and Text-figure 99.) Of all the principal types of Reptiles the fossil remains of which have yet come to light, no one stood in more urgent need of re-investigation than the little ' Saurian' from the Trias of Elgin, first described by Mantell in 1852 under the name of Telerpeton elginense +• Notwithstanding the detailed description of a more perfect specimen entrusted to Huxley by the late Mr. James Grant some years later §, it was impossible, from the data available, to form any opinion as to the position in the system of the genus Telerpeton, which by later writers is referred, with doubt, either to the Rhynchocephalia or to the Lacertilia||. Fortunately for the elucidation of this question, further specimens have been obtained at Lossiemouth during the last few years by m y friend Mr. William Taylor, in whose hands the specimen described by Huxley had also fallen after the death of Mr. James Grant, and I gladly availed myself of his kind offer to look over this material, consisting of the following specimens :- A (Plate XXXII.).-A nearly complete specimen, the bones mostly represented by casts, the original bony substance having disappeared, in a block of sandstone from Lossiemouth broken irregularly into five pieces. The reptile must have measured about 240 millimetres (skull, 45). As observed by Huxley, who gave a description of this specimen, the body is curved towards the right side, and the head and neck are bent dorsad in a plane different from that of the skull. W a x and gutta-percha casts have now been made for me by Mr. Hall, which render the outlines of some of the bones much clearer, and which enable * Beddard, " Contributions to the Anatomy of the Lacertilia.-(1) On the Venous System in certain Lizards," P. Z. S. 1904, vol. i. p. 4.36. f For explanation of the Plates, see p. 481. X Quart. Journ. Geol. Soc. viii. 1852, p. 100, pt. iv. § Op. cit. xxiii. 1867, p. 77, figs. || Lydekker, Cat. Foss. Rept. i. p. 294 (1888); Zittel, Handb. Pal iii p 597 (1889): F.von Huene, Pal. Abh. x. 1902, p. 8; Broom, Rec. Albany M u s i 1903 p l |