BIRDS 



363 



This species has been regarded by Rothschild and Hartert as a sub- 

 species of JV. melanotis. It cannot, however, be made a variety of 

 this form because all the specimens possess well developed black 

 maxillary stripes, a character not recorded on any specimen from 

 James or Albemarle. The same character relates the form to N. 

 adamsi of Chatham but it is separable from this species by the color 

 of the back and by the slightly longer bill. 



N. bauri differs from N. adamsi as follows : color of central parts 

 of feathers of head blackish rather than brown, edges of some feathers 

 grayish rather than brownish ; central areas of feathers of back dusky 

 brown instead of reddish-brown ; wing and tail feathers decidedly more 

 blackish and the pale edgings of the same wider and whiter ; lores, 

 suborbital and auricular regions black instead of brownish-dusky ; 

 sides of lower part of breast distinctly clouded with buff but not form- 

 ing an entire band across the breast ; no spots on the breast in any 

 adult specimens. 



In the collection are seven adult specimens from Tower, taken 

 June, 1899. 



MEASUREMENTS OF ADULT SPECIMENS OF NeSOmintUS 



^personatus bauri. 



7 9 <5. NESOMIMUS PERSONATUS PERSONATUS 



(Ridgway). 



Nesornimus personatus RIDGWAY, Proc. U. S. Nat. Mus., xn, p. 104, 1890 

 (Abingdon Island) ; Proc. U. S. Nat. Mus., xix, p. 488, 1896. 



Nesomimus melanotis personatus ROTHSCHILD AND HARTERT, Novit. Zool., 

 vi, p. 144, 1899. 



Range. Abingdon. 



This form intergrades through the next N. personatus bindloei 

 with N. personatus bauri of Tower. It is probable, however, that 



