BIRDS 



353 



luteola. The grouping together of the forms of the more northern 

 islands of the archipelago is similar to what obtains in the genus 

 Nesomimus. 



MEASUREMENTS OF SPECIMENS OF Certhidea olivacea fusca. 



73*. CERTHIDEA OLIVACEA MENTALIS (Ridgway). 



Certhidea mentalis RIDGWAY, Proc. U. S. Nat. Mus., xvn, p. 359, 1894 



(Tower Island), and xix, p. 504, 1896; Bull. U. S. Nat. Mus., No. 50, 



Pt. n, p. 766, 1902. 

 Certhidea drownei ROTHSCHILD, Bull. Brit. Ornith. Club, vn, p. 53, 1898 



(Culpepper Island). RIDGWAY, Bull. U. S. Nat. Mus., No. 50, Pt. n, 



p. 767, 1902. 

 Certhidea olivacea drownei ROTHSCHILD AND HARTERT, Novit. Zool., vi, p. 



150, 1899. I 



Certhidea olivacea mentalis ROTHSCHILD AND HARTERT, Novit. Zool., vi, p. 



150, 1899. 



Range. Tower and Culpepper. 



MEASUREMENTS OF ADULT SPECIMENS OF Certhidea olivacea 



mentalis. 



