| OCR Text |
Show 558 MR. R. LYDEKKER ON ZEUGLODONT [NOV. 1, This is the coloration of two specimens; a third is uniform greenish olive. This specimen has also two small temporals in front and in contact with the postoculars. Ventrals 163; subcaudals 60. Another variety, also represented by a single specimen, is uniform black above, lower parts dull greenish. Ventrals 162; subcaudals ca. 44 (tail slightly mutilated). Total length 2 4 | in., of which the tail takes 5 and the head f in. RANA NYASS^E. Vomerine teeth in two nearly straight, or slightly oblique series between the hinder part of the small choanae. Snout moderate, rather pointed; tympanum two thirds of the area of the eye. Fingers slender, the two inner ones subequal; toes very slender, the fourth rather shorter than the distance between the vent and tympanum, two-thirds webbed. Subarticular tubercles almost absent; inner metatarsal tubercle small, short, no outer one. If the hind limb be carried forward along the body, the tibio-tarsal articulation reaches far beyond the snout. Skin of the back with numerous short, irregular, undulated folds, passing into small tubercles behind; abdomens mooth. Upper parts uniform blackish brown; abdomen whitish, largely marbled with dark brown ; throat nearly entirely dark brown. Length of body 27 lines. „ hind limb 53 ,, „ fourth toe 17 „ One specimen. 4. On Zeuglodont and other Cetacean Remains from the Tertiary of the Caucasus. By R. L Y D E K K E R , B.A., F.Z.S. [Received September 3, 1892.] (Plates XXXVI.-XXXVIII.) The specimens forming the subject of the present communication were brought from Russia by m y friend Mr. A. Smith Woodward, to w h o m they had been lent by Prof. H . Sjogren, of Upsala, for the purpose of examination and description. They were obtained from a Tertiary deposit, in company with a number of fish-remains, in the Caucasus. The bones are in a fine state of preservation, and before cleaning were coated with a clayey matrix, among which were numerous plates of selenite ; the nature of the matrix thus suggesting a deposit very similar in character to our own London Clay. The specimens comprise several fragments of jaws, numerous more or less imperfect vertebrae, and a single humerus; all evidently belonging to Cetaceans (assuming that the Zeuglodonts are rightly included in that group). The vertebrae and jaws indicate that we have to do with |
