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 

 Neso7nimus. 



MEASUREMENTS OF SPECIMENS OF Ccrthideu oUvacea fusca. 



73^. CERTHIDEA OLIVACEA MENTALIS (Ridgway). 



Certhidea mentalis Ridgway, Proc. U. S. Nat. Mus., xvii, p. 359, 1894 



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



Pt. II, p. 766, 1902. 

 Certhidea droivnei ROTHSCHILD, Bull. Brit. Ornith. Club, vii, p. 53, 1898 



(Culpepper Island). — Ridgway, Bull. U. S. Nat. Mus., No. 50, Pt. 11, 



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 Ccrthideu oUvacea 



mentalis. 



