Genus — Z ANDA. 
Zanda Mathews, Austral Avian Kecord, Vol. I., p. 196, 
1913. . . ... . . . . . . . . . . Type baudinii. 
This genus agrees in general with Calyptorhynchus, with the following 
important differences : the bill is very narrow with a long tip ; the cere is 
half feathered ; though there is a bare eye space, the lores are feathered ; the 
first and second joints of the toes are rather regularly scaled. 
Figures of the bill given will show how unlike the bill is to that of 
Calyptorhynchus , the very narrow long tip of the upper-mandible, with 
minute sinus of the tip of the lower-mandible. 
I have given some notes under Calyptorhynchus, but here add some 
suggestions. Under the present genus two species are recognised, one eastern 
and one western. Calyptorhynchus is obviously only subspecifically separable 
in the east and west, though it ranges over the whole continent but does 
not enter Tasmania. The present genus is the only black Cockatoo repre- 
sented in Tasmania. The tail-coloration of this species somewhat recalls 
that of the immature and female of Calyptorhynchus. It is here suggested 
that this is the oldest phase of the Calyptorhynchine group, and that the more 
recently evolved Calyptorhynchus ( sensu stricto) has, by means of its more 
virile stock, extended its range through the continent perhaps at the expense 
in some places of the present genus. 
Key to the Species. 
Ear patch and bar on tail white . . . . Z. baudinii , p. 134. 
Ear patch and bar on tail yellow . . . . . . Z. funerea, p. 138. 
133 
