(PLATE 4, FIG. 3.)
_Psittirostra olivacea_ Rothschild, Avifauna of Laysan p. 193
(1900--Oahu, ex Lichtenstein nomen nudum & M.S.)
_Psittirostra psittacea deppei_ Rothschild, Bull. B.O.C. XV. p. 45
(1905--new name for the above, the name _olivacea_ being preoccupied by
Ranzani).
_Psittirostra psittacea psittacea_ is still one of the commoner birds on
most of the Hawaiian Islands, except Oahu, where it was formerly replaced
by a closely allied form, _P. p. deppei_, distinguishable by slightly
smaller dimensions, more whitish abdomen in the male, and somewhat more
olivaceous upperside. Specimens have been collected on Oahu by Prof. Behn
and Herr Deppe, and besides a pair in my collection, I only know of
examples in the museums of Berlin and Vienna. There is no trace left of
this species in Oahu, and in spite of great efforts Mr. Palmer and all
other recent collectors did not come across it. This form has thus shared
the fate of _Hemignathus ellisianus_, _Heterorhynchus lucidus_, _Moho
apicalis_ and _Phaeornis oahensis_, which have all disappeared from Oahu,
while _Loxops rufa_ may still exist in a few pairs, or has possibly
followed suit already.
{39}