NEWTONIA OLIVACEA. 199 



NOTE XXII. 



ON A PROBABLY NEW SPECIES OF NEWTONIA 

 FROM MADAGASCAR 



Dr. J. BUTTIKOFER. 



Amongst a number of specimens of Newtonia brunnei- 

 cauda from Madagascar in our Museum, I found two specimens 

 which differ considerably from the great number of typical 

 N. hrunneicauda and undoubtedly belong to a second, 

 hitherto undescribed species of this genus , which I propose 

 to name 



N ewtonia olivacea . 



Closely allied to N. hrunneicauda (Newt.), but easily 

 distinguished from the latter by the olive brown instead 

 of ashy brown upper surface, the much darker, tawny 

 brown color of the lower surface with the inclusion of the 

 under wing-coverts, by the greater length of tarsus and 

 toes, and by the difference in the proportional length of 

 the primaries, the fourth primary being a little shorter 

 than the fifth instead of equal to it. In the length of the 

 bill , wing and tail both species are alike. 



Entire upper surface , sides of head and neck , upper 

 wing-coverts and tail uniform dark olive brown , without 

 the least tinge of ashy gray; quills dark brown, the se- 

 condaries broadly edged with the color of the back, the 

 primaries with ochraceous brown ; lower surface of body 

 tawny brown, inclining to fulvous on the centre of the 



Notes from the Leyden JMuseum, Vol. XVUI. 



