Genus —C ORMOBATES. 
Cormobates Mathews, Austral Av. Rcc., Vol. V., pt. i., 
p. 6, July 17th, 1922. Type (by original designa¬ 
tion) .. .. .. .. .. .. .. C. leucophcca Latham. 
When I separated Neoclima from Climacteris I wrote: “ Differs from 
Cliimderis in its shorter, more slender, less curved bill and stronger feet, 
the longer wing with comparatively longer first primary.” The bill was less 
slender, not more slender, but the above shows the differences in the superficies 
of these groups, so that of Cormobates I could write : “ Differs from Climacteris 
(the type being C. picumnus, the Brown Treecreeper) in having a longer, 
more slender, and more curved bill, weaker feet and shorter wing.” However, 
this would not indicate the differences in the two forms, as these birds are of 
more delicate build, and live among the trees, the true Climacteris living more 
on the ground and being of much stouter build. 
Campbell wrote : “ The richly coloured, reddish, and round eggs of the 
Treecreepers ( Climacteris) make a handsome show, except those of C. leucophcca 
(White-throated Treecreeper), which are almost white. According to the 
science of oology, this species should be in a new genus. It certainly is not a 
true Climacteris .” 
Another item of unknown phylogenetic import in connection with the 
White-throated Creeper is the red spot just below the ear-coverts seen in the 
female alone, and the red rump of the juvenile plumage. This peculiar red 
colour shows again in the eyebrow of the Red-browed Creeper. 
i 
Key to the Species. 
Upper-surface light brown : 
Middle of chest not striated, no distinct eyebrow', 
larger 
Middle of chest striated, eyebrow distinct, smaller 
Eyebrow white 
Eyebrow red 
C. leucophcca. 
C. minor. 
C. affinis. 
C. erythrops. 
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