NO. 1976. 



TREESHREW8: FAMILY TUPAIID^—LYON. 



127 



portion. Some members of the genus have conspicuous face markings, 

 caused by a dark streak extending from half way between nostril 

 and eye through the eye to the ear, and a lighter stripe above and one 

 below this line. In the dark species Dendrogale melanura these mark- 

 ings ftre only barely traceable. Similar face markings are also faintly 

 indicated in Anathana. The shoulder stripe present (sometimes 

 almost obsolete in Tupaia) in all the other members of the family 

 except Ptilocercus is absent in Dendrogale. There is probably only 

 only one pair of mammge and they are inguinal. 



Cranial characters. — The skull of Dendrogale is in general propor- 

 tioned as in Tupaia. The 

 only very striking differ- 

 ence is the reduction of 

 the zygomatic fenestra to 

 a small foramen. In the 

 comparatively few speci- 

 mens that I have ex- 

 amined the skull, m ad- 

 dition to being generally 

 small, has a more rounded 

 brain case, is less angular, 

 has less conspicuous tem- 

 poral ridges as compared 

 with Tupaia. Unfortu- 

 nately none of the speci- 

 mens have been old 

 adults . The skuU figured 

 by Sclilegel and Miiller ^ 

 is quite as angular as the 

 majority of Tupaia skills. 

 See below under type- 

 specimens of Dendrogale 

 murine, page 130. 



Denial characters. — The 

 teeth of Dendrogale are 

 very similar to those of Tupaia. The hypocones of the upper molars 

 are considerably reduced, so that practically none are found on the 

 second and third molars. The anterior teeth, i^, i^, c\ Cj, pm2, pm^, 

 are more trenchant in character than they are in Tupaia, especially 

 seen in the second upper incisor. The dental characters, however, 

 are relatively unimportant and would not be of themselves sufficient 

 to warrant the generic distinctness of Dendrogale, but in conjunction 

 with other characters serve to emphasize the validity of the genus. 



Fig. 8.— Dendrogale melanuea melanura, Type x li- 

 Reg. No. 92. 2. 7. 11, British Museum, 5,000 feet on 

 Mount Dulit, northern Borneo. 



1 Verb. Nat. Gesch. Nederl. Overz. Bezitt., 1843, pi. 27, figs. 17-18. 



