FAM. NESTORIDA® 3 
the South Island ones; still it appears that it is not always easy to perceive the difference if single 
specimens only are compared. 
The value of N. esslingi as a species is also questioned. 
Dr. H. O. Forbes and Mr. H. C. Robinson have thrown some doubts as to N. xorfol- 
censis being different from N. productus, but the two birds inhabiting two Islands I should 
say that they must have been different. 
Dr. E. Hartert has sent me word that he is convinced that the bill of the so-called 
N. norfolcensis is an overgrown cage-bird bill. 
EXPLANATION OF PLATE 
1. Nestor septentrionalis Lorenz. 
—- fm = — — Primaries. 
Nestor notabilis Gould. 
oe 
— 2 — _ Feather of the breast. 
— 3. Nestor productus (Gould). 
— 4. Nestor meridionalis (Gmelin). 
ee _ — Dorsal feather. 
a — “= Foot. 
Turin, 15th April 1905. 
