38 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.45. 



Upper parts without fine diffused grizzling, grizzling absent or else coarse, 

 and without tendency to dark patch on back. 

 General coloration of head, body, and tail tawny. 



Tawny, light and bright Laut, Natuna Islands, T. hicida, p. 86. 



Tawny, dull and darker. . . . Riabu, Anamba Islands, T. riabus, p. 88. 

 General coloration of head and body a mixture of dark ferruginous and 

 blackish. 



Under parts ochraceous Bintang Island, T. castanea, p. 90. 



Under parts light or dark buffy, sometimes grizzled. 

 Under parts bright buff y without grizzling.. Sumatra, T. siaca, p. 91. 

 Under parts dull buffy more or less gi'izzled. 

 Under side of tail tawny. 



Bunguran, Natuna Islands, T. natunse, p. 85. 

 Under side of tail ochraceous. 



Upper parts inclining toward ferruginous. 



Siautan, Anamba Islands, T. carysomalla, p. 88. 

 Upper parts inclining toward ochraceous. 



Jimaja, Anamba Islands, T. ajiambie, p. 89. 



Tail uniformly above and below grizzled blackish, and gi-ayish, buffy, or 



ochraceous, never with a distinct clear area on either side of middle of tail 



when viewed from below. 



First and second upper molars rather quadrate in outline, with distinct 



hypocones, shoulder stripe obsolete or nearly so, back often marked with 



with a broad black band T. mo7itana, p. 93. 



Back usually marked with a broad black patch or band. 



Mount Dulit, Borneo, T. m. montana, p. 94. 

 Back without a broad black patch. 



Mount Kina Balu, Borneo, T. m. baluensis, p. 95. 

 First and second upper molars more triangular in outline and with hypo- 

 cones poorly developed if at all, shoulder stripe usually fairly well 

 indicated; back never with a broad black band. 

 Upper partg of body distinctly rusty or ferruginous in color, and if grayish 

 areas are present they are posterior. 

 Anterior portion of body ferruginous, posterior grayish; mammae, 3-3=6. 

 Hind foot less than 50 mm.; difference in color between anterior and 

 posterior portions of back very marked. . .Banka, T. discolor, p. 73. 

 Hind foot usually 50 mm. or more; difference in color between anterior 



and posterior portions of back less marked T. longipes, p. 74. 



General effect of lower back and tail bister. 



Northern Borneo, T. I. longipes, p. 76. 

 General effect of lower back and tail clove-brown. 



Southern Borneo, T. I. salaiana, p. 77. 

 Anterior and posterior portions of body of the same ferruginous color. 

 Under parts dirty white to buffy, never orange rufous; mammee, 

 2-2=4. Ferruginea gi'oup. 

 Tail brownish, like rest of upper parts in color. 



Sinkep Island, T. phxura, p. 49. 

 Tail darker or lighter than rest of upper parts. 

 Tail black or blackish, seen above. 



Palawan Island, T. palawanensis, p. 78. 

 Tail a grizzle of blackish and buffy, seen above. 

 Hind feet darker than tail, nearly black, a light buffy color pre- 

 dominating at end of tail. . Batu Islands, T. tephrura, p. 50. 



