194 



AVIFAUNA OF LAYS AN, ETC. 



It may be diagnosed as follows : — 



Psittirostra similis speciei Ps. psittacca dictae, differt abdomine maris adulti albido, 



colore supra paullo olivascentiorc, alis brevioribus. 

 JETab. Insula Oaliu dicta, olim. 



The measurements of an adult pair, which I received in exchange from the Museum 

 at Kiel, arc: Wing 3*75 inches in the male, 3'64 in the female; tail 2'6 in both ; culmen 

 071 in the male, 64 in the female ; tarsus 0*85 in both. 



This Ou formerly existed on the island of Oahu, and a few specimens collected by Deppe 

 are in the Museums of Berlin and Vienna, Avhile quite a series, collected on Oahu in October 

 1846 by Professor Behn during the voyage of the Danish ship ' Galathea,' is in the Museum 

 at Kiel, of which I was fortunate to obtain a male and a female by exchange. 



Neither Mr. Scott Wilson nor Messrs. Palmer and Perkins were able to discover a 

 Psittirostra on Oahu, and as these birds are not easily overlooked, we may safely suppose 

 that it is extinct now. Palmer was told by several persons that it was formerly not 

 uncommon. 



