NO. 1976. TREESHREW8: FAMILY TUPAIIDJE—LYOU. 99 



Geographic distribution. — Known only from Karimata Island, but 

 probably occurring on other islands of the same group. See No. 36 

 on map on page 75. 



Diagnosis. — A very distinct species intermediate in general char- 

 acteristics between TwpUia splendidula and T. montana, slightly 

 smaller than either, without a black dorsal area, basal portion of hairs 

 of underside of tail, almost without annulations," underparts not 

 distinctly grizzled. 



Color. — Type: Upper parts of head, neck, body, outer side of legs 

 and tail a fine distinct grizzle of ochraceous and blackish, the two 

 colors about equally mixed except on dorsal area posterior to shoul- 

 ders where the black is in excess and suggests the condition found in 

 Tupaia montana haluensis; underparts, including inner side of legs, 

 varying from buff to ochraceous buff with dark bases of hairs showing 

 through in places, but not finely grizzled as in T. montana; underside 

 of tail ochraceous, distinctly grizzled with blackish along margins, 

 and along the area of short appressed hairs; shoulder stripe, ochra- 

 ceous, well developed. 



STcull and teetli. — Skull slightly smaller than in either Tupaia mon- 

 tana or T. splevdidula, relatively wide, zygomata spreading, brain- 

 case inflated, rostrum shortened. The teeth are essentially Uke those 

 of T. montana, but first and second upper molars not quite so quad- 

 rate. As a whole the skuU seems to have more affinities with that of 

 Tupaia montoTia than with that of T. splendidula. (Plate 10, fig. 6.) 



Measurements. — Type: Head and body, 176 mm.; tail, 147; hind foot 

 40; condylobasal length, 42.5; zygomatic width, 24; width of brain- 

 case, 18; maxillary toothrow, 16. For individual measurements. 

 see table, page 100, none of which differ essentially from those of the 

 type. 



RemarJcs. — Tupaia carimatse is a very distinct species and would 

 scarcely be confused with any other form. It appears to possess 

 more characteristics of T. splendidula than it does of any other 

 species, namely, moderately well developed shoulder stripe, gen- 

 erally ochraceous underparts, without fine distinct grizzhng, and 

 basal portion of hairs of tail on underside practically clear ochraceous. 

 Its montana characteristics are its generally finely grizzled upper 

 parts, slight tendency to a dark dorsal area, and skull as a whole 

 approaching that of T. montana more than that of T. splendidula. 

 On geographic grounds it seems most likely that Tupaia carimatse, 

 is an insular form of the Bornean T- splendidula. The mammalian 

 fauna of Karimata has apparently been derived from forms similar 

 to those occurring in southern Borneo,^ a region where we know T. 

 splendidula certainly occurs. 



Specimens examined. — Seven, all from Karimata Island. 



1 See Lyon, Proc. U. S. Nat. Mus., vol. 40, p. 81, April 25, 1911, remarks oa squirrels onhe prevostii group. 



