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The following appear to be the different species of this genus, but it is highly probable that other intermediate forms will yet be discovered in the Malayan region:— T t j p a ia e l l io t i , Waterhouse, Plate VII, figs. 12 and 13, skull. Tttpaia ellioti, Waterhouse, Proe. Zool. Soc. 1849, pp. 106, 108, pi. xiii; Jerdon, Mamm. India, 1867, p. 64 j Ball. Proc. As. Soc. Beng. 1874, p. 95. Cladoiates ellioti, Wagner, Schreber, Saugeth. Suppl., v. 1855, p. 526; Giebel, Saugeth., 1859, p. 914; Fitzinger, Sitzgsbr. der K. Akad. Wien. 1870, vol. lx, p. 278. Eur soft and moderately thick, pale rufous brown, darkest on the back, and paler on the sides. Length of fur 0-46; the basal black band not exceeding 0-15, and succeeded by yellow, black, yellow-and-black bands. The light-coloured bands are pale yellow on the sides and pale ferruginous on. the back. The longest hairs, which, as in the other species, occur on the hind quarters, are 0'75 inch in length. The upper surface of the tail is concolorous with the upper surface of the body. The upper surface of the head is more brown than rufescent, and is more finely annulated than the rest of the fur. There is a pale line from the muzzle over the eye and a similar area below the eye. The shoulder stripe is also pale. The'feet are clothed with yellow unannulated hairs. The under surface of the body is white, tinged with yellowish. The median line of short hairs on the tail is a darker yellow than the feet. The species is about the same size as T. ferrugmea and T. belmgeri, but the •tail appears to be a little longer than in these species. Waterhouse states that it is about the same size as T. tma, but his measurements of the body are 2*66 inches less than those of the latter species as given by Horsfield. Measurements of an adult male in alcohol • Inches. Snout to v e n t . ................................................ ■ • •. 7’§2 Vent to tap o f tail ................................................... ............................................... • • • 7*17 Snout to anterior angle of eye ..........................................................................................................‘77 E y e . -36 Posterior angle of eye to upper angle of e a r .................................................................... ‘32 Greatest depth of e a r ................................................................................................................ • ‘77 „ breadth of ear.......................................................... . .. ~ • ‘68 Fore foot, and nail ........................................................................................ ‘94 Middle t o e ..................................................................................................................................................... Length of hind foot . . . . • . ‘ . • . - • ■ •• ■ • • l f72 „ of middle toe . . . •. • • • • ■ • . . . "58 Measurements of 3 skulls of T. ellioti : Inches. Inches. Inches. Occipital crest to tip o f p r em a x illa r ie s ........................................................... ......... 1-72 1-70 Inferior margin of foramen magnum to p r em a x illa r ie s ........................................ 1*64 Greatest breadth across zygomatic a r c h ..................................................................... „ across p a r i e t a l s ........................................................... of foramen magnum in (between 2nd and Breadth at lachrymal notch . . . . „ c a n in e s .................................................. . ■ 2nd incisors . . . 1st . . . . „ orbital angle of parietals . Least breadth between orbits . . . . Length between post-palatine margin and inferior n Greatest breadth between alveolar surface, external 3rd molars) . . . . . Breadth (external) half-way between posterior incisor and canine Lachrymal notch to tip of premaxillaries . . Length o f alveolar border. . . . . . Breadth behind origin o f zygomatic arch (lateral aspect of skull) Distance between tympanic bullee (anterior extremity) » » » ,, _ (posterior „ , ) . . . Depth of skull premaxillary surface to anterior extremity of nasals „ „ maxillary „ . posterior „ „ „ through posterior margin o f p alate ........................................ „ „ highest point o f parietal . . . . „ at middle of occipital crest to inferior margin of foramen magnum Anterior extremity of symphysis of lower jaw to extremity of angular process „ „ . „ , ,, „ to condyle '. . . . . „ „ „ ,i to coronoid process Length o f alveolar s u r f a c e .................................................. Depth through coronoid p r o c e s s ........................................... > „ . from base of corono-condyloid notch . . , ’16 •64 1-14 1-12 1-12 •62 •62 The skull is much narrower than in either T. ferrugvnea, T. belangeri, or T. chmensis, and is slightly smaller than the skull of the last-mentioned species, Its most striking peculiarities are the depressed character of the snout, which arches downwards, and the regularly tapering form of the same part, the absence of a constriction between the orbits or concavity in the upper margin of the orbit, which is straight and continuous with the lateral margin of the snout. The nasals are proportionately broader than in the foregoing species, and very little expanded posteriorly. The supra-orbital foramen is distinctly removed from the orbital margin. The intra-orbital region is not so constricted as in the other species. The base of the malar is proportionately broader than in the species enumerated, and the perforation of the same bone is very small and situated on the ridge at the union of the zygomatic process of the squamosal with the malar, The auditory bullae are rounder and fuller than in the before-mentioned species. The teeth are smaller, and the second incisor when fresh through the gum is more pointed than in any of the other species, and closely resembles the canine, which, however, is broader and more erect and nearly allied in form to the central cusp of the premolars. The first incisor shows the anterior and posterior rudiments of the cingulum more distinctly than in T. ferrugvnea, T. belangeri, or T. chmensis, and it is nearly equal in length to the canine. The 2nd premolar, as pointed out by Waterhouse, has a distinct inner lobe, but it is not peculiar to the species as its original describer supposed, for it occurs also in T. ferruginea, although not nearly so prominently developed, and it is also faintly indicated in T. belangeri and T. chmensis, The