NO. 1976. TREESHREW8: FAMILY TUPAIID^—LYON. 29 



by some because of its barbarous origin from tupai the Malay word 

 for any squirrel-like animal, in favor of Eylogale or Eylogalea, and 

 Cladobates. 



Tupaia is often written Tupaja by German and Dutch authors, and 

 occurs as Tupaya in Geoffroy and Cuvier.^ 



Urogale.— Proposed by Mearns (Proc. U. S. Nat. Mus., vol. 28, May 

 13, 1905, p. 43^ for the very peculiar treeshrew from Mindanao, Philip- 

 pines. The type is U. cylindrura Mearns, which in the present paper 

 is considered a synonym of Tupaia everetti Thomas. It is one of the 

 most characteristic of all the genera of the Tupaiidse excepting. 

 Ptilocercus. 



KET TO GENERA BASED ON EXTERNAL CHARACTERS. 



Tail naked for its basal portions, with a distichous tuft of haii-s at end. 



Ptilocercin^, Ptilocercus, p. 159. 

 Tail haired throughout its whole extent, without a distinct naked basal portion. 



TUPAIIN^. 



Tail rounded and close haired for its whole extent. 

 Hind foot about 30 mm.; snout not unusually long and slender, head usually 



conspicuously marked Dendrogale, p. 126. 



Hind foot about 50 mm.; snout long and slender, head without conspicuous 



markings Urogale, p. 154. 



Tail clothed with longer hairs, squin-el-like in character. 



Snout long and slender, with a naked area on top of nose encroaching backward 



in middle line into hau-ed area Tana, p. 134. 



Snout not unusually long and slender, with naked area on top of nose not en- 

 croaching on haired area, but cut straight across. 

 Lower lobe of ear presenting a surface greater than upper half of ear, inner side 

 of ear fairly well haired, reticulations on naked area of nose coarser. 



Anathana, p. 120. 

 Lower lobe of ear presenting a smaller surface than upper portion of ear, inner 

 side of ear scantly haired, reticulations on naked area of nose finer. 



Tupaia, p. 30. 



KEY TO GENERA BASED ON CRANIAL CHARACTERS. 



Supraorbital foramen absent, temporal fossa about equal to orbit in size, 



Ptilocercin^, Ptilocercus, p. 159. 

 Supraorbital foramen present, temporal fossa conspicuously smaller than orbit, 



TUPAIINyE. 



Fenestra in zygoma small and inconspicuous. 

 Rostrum much elongated; distance from lachrymal notch to end of premaxilla 



about equal to distance from notch to occipital condyles Urogale, p. 154. 



Rostnmi not conspicuously elongated; distance from lachrymal notch to end of 

 premaxilla much less than distance from notch to occipital condyles. 

 Distance from lachrymal notch to end of premaxilla equal to distance from 



notch to auditory meatus; rostrum slender Dendrogale, p. 126. 



Distance from lachrymal notch to end of premaxilla equal to distance from 

 notch to outer pterygoid plate; rostrum heavy Anathana, p. 120. 



I Hist. Nat. Mamm., vol. 3, liv, 35, December, 1821, p. 1. 



