148 Miller — A New Squirrel from Lower Siam. 



Skull smaller than that of the Burman animal, the rostrum relatively 

 shorter, and region between anterior zygomatic roots proportionally 

 broader. 



Color.— Type: sides of body and outer surface of legs hair-brown 

 faintly tinged with yellowish, particularly on flanks. Back with nine 

 longitudinal stripes as follows: a median black stripe 3 mm. in width is 

 succeeded by a slightly broader stripe of dull ochraceous-buff ; beyond 

 this lies a black stripe 7 mm. wide followed by one of clear buff of 

 similar width; this in turn is bordered on the outer side by a black line 

 about as broad as the median stripe, extending from shoulder to rump. 

 Except this short outermost band and the buff stripe, these longitudinal 

 markings extend from middle of neck to rump. The buff stripe is con- 

 tinued forward along side of neck and under ear to cheek, where it 

 spreads so as to surround eye, muzzle and lips. Behind eye there is a 

 faint dusky line, and still more faint dusky wash extends over lower 

 part of cheek and along side of neck between buff stripe and the darker 

 color of the underparts. Ears tawny-ochraceous internally, black extern- 

 ally except for the conspicuous white tuft at tip; many of the hairs of 

 this tuft white to extreme base. Whiskers black. Feet dull ochraceous. 

 Underparts and inner surface of legs clear ochraceous-buff, slightly more 

 yellow than that of Ridgway, the hairs slaty at base. Hairs of tail black 

 at base and at extreme tip, the intermediate region occupied by a broad 

 band of dull ochraceous, another of black, and a narrow subterminal area 

 of yellowish-white. Pencil black slightly grizzled by numerous small 

 yellowish annulations. 



Skull and teeth— The skull is smaller than that of Sciurus barbei, the 

 diameter of the orbits and audital bulla; is less, and the rostrum is shorter. 

 On the other hand, the interorbital width is fully as great as in the larger 

 animal, and the lachrymal breadth is distinctly greater. The increased 

 breadth of the region between the anterior zygomatic roots contrasted 

 with the shorter rostrum gives the skull a very distinctive appearance as 

 compared with that of Sciurus barbei. Teeth as in the Burman animal, 

 but smaller throughout. 



Measurements.— Measurements of type: total length, 210; head and 

 body, 115; tail vertebrae, 95; hind foot, 30 (28); ear from meatus, 12; ear 

 from crown, 8; width of ear, 8; skull, greatest length, 31 (33)*; basal 

 length, 25(27.8); length of nasals, 8 (9.4); interorbital breadth, 12 (12); 

 lachrymal breadth, 16 (15.6); mandible, 17.4 (19). 



Specimens examined. — Five, all from Trong, Lower Siam. 



Remarks. — That this is not the same as the Tamias leucotis of Tem- 

 minck is shown by the stress laid in the original description of the 

 Malaccan animal on the presence of only one black longitudinal stripe. 

 In one of Temminck's specimens the underparts were white slightly 

 washed with reddish; in the other they appear to have been essentially 

 as in the species found in Trong. 



*Cranial measurements in parenthesis are those of an adult male Sci- 

 urus barbei from Yado, Burma (No. 36,044). 



