PLEGADIS. 
my friend Dr. C. W. Kichmond pointed out that this was erroneous and 
suggested an enquiry into the use of the generic name Ibis, which I have 
summarised under the genus-name Threskiornis. Since then I have examined 
Billb erg’s work and in conjunction with Iredale have published some notes 
in the Austral Avian Record, Vol. II., pp. 33-48, 1913. The reprint of the 
table there given shows at once the accuracy of Richmond’s contention and 
the true position of Egatheus Billb erg. The only other name that has 
threatened the use of Plegadis is “ Falcinellus Bechstein, 1803.” I have 
been no more successful than other systematists in tracing the origin of 
this quotation, though Illiger noted it in the synonymy of Ibis as early 
as 1811. The earliest writer to absolutely use it for this genus seems to 
have been Gray, in 1841 : this is, of course, twelve years later than Plegadis, 
while Falcinellus has been used in other connections as early as 1816. 
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