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Show 1876.] DR. A. GUNTHER ON BORNEAN MAMMALS. 427 The foramen in the zygomatic arch is a narrow elongate slit. measurements of the four posterior molar teeth are as follows :- Length. Width. millim. millim. a. Molar 1*7 1*7 b. Molar 2*5 2*5 c. Molar 2*3 2"5 d. Molar 1*4 2*0 Several specimens of this species have been sent by Mr. Low the mainland of Borneo, opposite Labuan. 6. TUPAIA MURINA (Mull. & Schleg.)-=7\ frenata, Gray, Ann. &Mag. Nat. Hist. 1860, vi. p. 217. II. The greater part of the hairs on the hind part of the back tail are of a uniform black, brown, or red colour. A. Large species. 7. TUPAIA TANA (Raffl.). This species is subject to considerable variation of colour, unaccompanied by any structural modification of the skull or dentition. The second molar has sometimes a well-developed inner tubercle at the base of the cusp ; but in other specimens showing exactly the same coloration this tubercle is absent. I therefore must confirm Schlegel's opinion that Tupaia speciosa of Wagner is not specifically distinct from T. tana. The following varieties may be distinguished:- a. Var. TANA. Tail black above, basal half of each hair rusty-brown, lower part of the tail dark brown. Sumatra ; ? Borneo. b. Var. SPECIOSA. Tail brownish red above, bright rusty-red below. Sarawak, Pontianak. c. Var. CHRYSURA (Plate XXXVI.). Tail golden yellow, with a reddish tinge. Mainland of Borneo, opposite to Labuan. 8. TUPAIA NICOBARICA, Zelebor, Novara-Reise, Saugeth. p. 17, Taf. 1 & 2. Nicobars (a desideratum in the British-Museum collection). B. Small species. 9. TUPAIA SPLENDIDULA (Gray). Having extracted the skull from the typical specimen, I have convinced myself that this specimen is perfectly adult. PARADOXURUS PHILIPPENSIS (Temm.). An adult example sent by Mr. Low from the mainland of Borneo, opposite Labuan, agrees in every respect with specimens collected by Dr. A. B. Meyer in Luzon. VIVERRA TANGALUNGA. The Civet Cat inhabiting Borneo is the Viverra tangalunga of Gray. |