16 ARKIV FÖR ZOOLOGI. 



Skull measurements : 



band 8. n:o 2i 



Sakerat 



Length from condylus to gnathion 44,5 mm. 



Basicranial length 40, o » 



Greatest zygomatic breadth . . . 25,8 



» width of brain-case ... 19, i 



Length of nasals 13,9 



Greatest breadth of nasals ... 5,1 

 Breadth between meatus auditorius 18,6 

 » of bullw to meatus audi- 

 torius 5,o 



Least interorbital breadth .... 12,2 

 Distance between tips of postorbi- 



tal processus 18,3 



JLength of diastema 12,8 



» » upper molar series (al- 



veolar) 10,4 



9 



Sakerat 

 42,0 mm. 

 36,2 » 

 24,5 » 



13,1 



5,1 



17,4 



5,8 

 12,3 



18,0 

 12,o 



Vang Nun 

 44,2 mm. 



38,8 » 



19,2 » 



14,1 » 



5,1 » 



4,8 

 12,0 



18,2 

 12.6 



9,0 » 10,2 



16. Petaurista sp. — A specimen of a Large Flying 

 Squirrel was shot by a gendarme when I bad my camp at 

 Kao Plyng, but the man was quite unwilling to sell the spe- 

 cimen. Therefore 1 am unable to give an exact determina- 

 tion of the species, but the short notes I made in my diary 

 seem to indicate a member of the »yunnanensis» group. 



The specimen was rather large and of a dark brownish 

 colour even on the upper parts of the body, thus it could 

 not have been a specimen of P. lylei, Bonh. which is only 

 known from upper Siarn. 



17. Sciuropterus sp. — During my stay at Sakerat in 

 Eastern Siarn, a native boy brought me a specimen of Sciu- 

 ropterus, but unfortunately it was in such a bad condition 

 — being almost rotten — that it was of no use for a na- 

 tural history collection. It was quite impossible to make 

 an exact determination of the species, but I am inclined to 

 ref er it to Sciuropterus phayrei Blyth. 



18. Mus surifer Miller. — Miller: Proc. Biol. Soc. 

 Washington XIII. 4900 p. 149. — In the collection there is 



