558 MR. R. LYDEKKER on iZKUGLODONT [Nov. 1, 



This is the coloration of two specimens ; a third is uniform 

 greenisli 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 shghtly mutilated). 



Total length 24| in., of which the tail takes 5 and the head | in. 



RaNA NYASSiE. 



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-tarsai 

 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 Zeugiodont and other Cetacean Remains from the 

 Tertiary of the Caucasus. By R. Lydekker^ B.A.^ 



r.z.s. 



[Eeceived September 3, 1892.] 

 (Plates XXXVI.-XXXVIII.) 



The specimens forming the subject of the present communication 

 were brought from Russia by my friend Mr. A. Smith Woodward, 

 to whom 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 Ce- 

 taceans (assuming that the Zeuglodonts are rightly included in that 

 group). The vertebrae and jaws indicate that we have to do with 



