502 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXllI. 



Cranial measureinent of Snmatran and Bornean svn-bears. 



DiniciKsious. 



Basal length - . 



Basilar length 



Co ndylo- basal length 



Palatal length 



Greatest length 



Zygomatic width 



Mastoid width 



Width of braincase above zygomata 



Width at postorbital processes 



Least interorliital width 



Least width of palate between last upper m.olars 



Posterior edge of last upper molar (alveolus) to palation 



Posterior edge of last upper molar (alveolus) to tip of pterygoid 



Alveolar length of last three upper cheek teeth combined 



Antero-posterior diameter of canine at alveolus 



Helarctos 

 malayanus, 



Cat. No. 

 123138, Kate- 

 man River, 

 eastern Su- 

 matra. 



215 



210 



234 



117 



256 



208 



156 



104 



87. 



69 



41 



36 



66 



44 



25 



Helarctos 

 curtispilus 



Cat. No. 

 142344, Lan- 

 dak River, 



Borneo. 



189.5 



186 



205 



102.3 



222 



176.4 



1.34. 5 



91.8 



74.6 



60 



36 



28 



60 



44.5 



22.5 



TUPAIA DORSALIS Schlegel. 



1857. Tupaia dorsalia SciiLEciEL, Haiull. IxMicf. Dicrkuiide, Pt. 1, p. 59, pi. iii, 



lig. 31. 

 1890. Tvpata dorsaiin, Jentink, Notes Leyden Museum, XII, p. 228. 



Skin and skull of adult female from the Kapuas River opposite 

 Pulo Saparo. Region of that river is the type-locality. 



Measurements, Cat. No. 142247, ILS.N.ivi.: Head and body, 175 

 mm.; tail vertebrae, 145; hind foot 43; greatest length of skull, 49; 

 zygomatic width, 22. -4 ; interorbital constriction, 12.8. 

 ' [Snared by Malay.— W. L. Abbott.] 



TUPAIA SPECIOSA (Wagner). 



1840. Cl[adobulcs] upecio-'ins W'agiNek, .Schrebers Haugthiere, Suppleinentband 

 von J. A. Wagner, II, p. 43. 



Two specimens, an adult male from the Kapuas River opposite 

 Pulo Jambu and a young male from the Tyan district. Owing to 

 the general distinctness of species in related groups from Borneo and 

 Sumatra, I have used the name Twpaia speciosa (type-locality, Bor- 

 neo) in preference to the usual name T. tana (type-locality, Sumatra). 

 The adult. Cat. No. 142247, IT.S.N.M., measures: Head and body, 

 229 mm.; tail, 196; hind foot, 55; greatest length of skull, 64; zygo- 

 matic width, 29.8; interorbital constriction, 16.6. 



CYNOPTERUS BRACHYOTIS (Miiller). 



1839. I'achysoiiia hrachijotis Mullew, 'I'ijdsclirilt Natuur. Geschied. Physiol., 

 V, p. 146. 

 Twenty-five specimens, 2 skins with skulls and 28 in alcohol, all 

 from the Kapuas River, Sanggau district. 



For external measurements of ten adults see table, page 564, 

 Nearly all of the specimens are pregnant females. 



