38 NILS GYLDENSTOLFE, THE SVVED1SH ZOOLOGICAL EXPEDITIONS TO SIAM. 



blackish median line. Individual hairs with the basal part white and with a narrovv black 

 tip; underfur nearest »Sanfords brown» of Ridgway. The rest of the pelage as in the 

 other specimens. The tail is on the upper surface for its basal part (about 60 mm.) ex- 

 actly of the same colour as the back though divided into two parts by a narrow black 

 line; the rest is bright maroon. The hairs on the tip of the tail are black for their basal 

 part. The hands and feet are black grizzled with brownish red and grey. 



It therefore seems to be evident that this species, as well as the other members of 

 the same group, undergoes a seasonal variation. 



I have had the pleasure in naming this fine race of squirrel after Mr. W. L. Grut, 

 the Director of the Siarn Electricity Company and one of the most active members of 

 the Natural History Society of Siarn. 



Skull measurements 9 *yp e ? 99 



— 



— 



— 



47,7 



— 



— 



33,3 



32,0 = 



31,5 



33,0 



31,6 » 



31,6 » 



23,2 



22,6 » 



25,0 



24,0 



24,3 



23,8 » 



29,2 



29, t 



27,5 



30,0 



28,n 



28,1 



20.1 



19,8 » 



19.3 



20,4 



19,5 



19,2 



23,0 



22,5 



23,0 



23,1 



22,3 



22,0 



10,3 



10,3 



16,0 



15,7 



16,2 



16,2 » 



7,3 



7,8 



0,3 



7,3 



7,1 



7,8 



10,8 » 



11,6 



11,3 



12,2 



11,9 



11,5 » 



21.8 



22,0 



22,0 



22,7 



22,1 



21,7 



10,9 



10,2 



10,6 



10.1 



10.3 



10.1 » 



Greatest length 54,5 mm. 54, o mm. 54,5 mm. 54,0 mm. ! 55,0 mm. 55,0 mm. 54,5 mm. 



Condylus to gnathion 50,2 » — 50,1 49,3 » — 



Basicraniäl length ! 46,9 



Zygomatic width 31,5 



Width of braia case 23,8 



Widt betwoen. tips of postorbital processus . . . 29,0 



Least interorbital width 19,1 



Breadth between meatus auditiya 22,5 



Length of nasals mesially 15,2 



Breadth of nasals anteriorly 7,2 



Length of diastema 1 1 ,0 



Palate to henselion 22,5 



Length of upper toothrow 10,8 



Menetes berdmorei consularis. Thos. 



Oldfield Thomas has recently (Journ. Bombay Natural History Society. Vol. 

 23 No. 1 1914 p. 23 — 25) disgussed the different races of Menetes berdmorei. He also de- 

 scribes several new subspecies and among them a form called M. berdmorei consularis 

 Thos., based on specimens from Nan in Northern Siarn. This new race differs from the 

 other known forms in the following particulars according to Thomas. »There are no 

 median dorsal stripes or upper dark lateral ones, the only dark streak being that between 

 the light lateral streaks and even that is absent in January and February. Under surface 

 yellowish white. » 



During my stay in Upper Siarn 1 only collected two specimens (both females) of 

 this squirrel, the one was shot at Chum Poo on the 3rd of May 1914 and the other at 

 Koon Tan on the 7th of June 1914. Both these specimens agree fairly well with the 

 description of Menetes berdmorei consularis as given by Thomas. There is not the slightest 

 sign of a dark median dorsal stripe, but the colour and the extent of the dark stripe be- 

 tween the lighter lateral ones seems to be rather variable. In the Koon Tan specimen 



