TREESHREWS: AN ACCOUNT OF THE MAMMALIAN 

 FAMILY TUPAIID^. 



By Marcus Ward Lyon, Jr., 



Formerly of the Division of Mammals, United States National Museum. 



INTRODUCTION. 



This -review of the treeshrews, constituting the mammahan family 

 Tupaiidse, was originally contemplated in 1904 by Mr. Gerrit S. 

 Miller, jr., curator of mammals, United States National Museum, but 

 owing to pressure of other work he was unable to carry it out. In 

 1910, shortly after I severed my active connections with the Division 

 of Mammals, United States National Museum, Mr. Miller suggested 

 to me the desirability of making a study of the treeshrews. I took up 

 his suggestion and the present paper is the result. At that time he 

 turned over to me some preliminary notes on the group he had made 

 during a visit to European museums when he was primarily engaged 

 in other lines of research. The increase of new material, both in the 

 United States National Museum and in other museums, made it 

 imperative that the entire field be gone over again. The collections 

 in Washington were first studied, and during the summer of 1911 I 

 visited most of the museums which Mr. Miller's previous work 

 showed contained material valuable for this revision. 



Specifically, the material examined consists of about 800 speci- 

 mens, all of which are listed in the tables of measurements and dis- 

 tributed as follows: 



British Museum, 355 specimens, 27 types. 



United States National Museum, 324 specimens, 29 types. 



Civic Museum of Natural History, Genoa, 37 specimens, no types. 



Royal Zoological Museum, BerHn, 29 specimens, 1 type. 



Museum of Natural History, Paris, 20 specimens, 1 type. 



American Museum of Natural History, New York, 14 specimens, 1 

 type. 



Natural History Museum of Geneva, 3 specimens, no types. 



Natural History Museum of Turin, 1 specimen, no types. 



In addition to the specimens mentioned above, in most museums, 

 particularly the older ones, there are a number of specimens of very 

 uncertain or generalized localities, which are unsuitable for systematic 

 work, and they are not included in the above figures. 



Proceedings U. S. National Museum, Vol. 45--No. 1976. 

 80459°— Proc.N.M.vol.45— 13 1 



