584 Mr. R. C. L. Perkins — Introduclion to 



14 (5). ]}eak always strong, often excessively power- 



ful and heavy, sometimes with the upper 

 mandible conspicuously surpassing the 

 lower. Robust birds, never very small. 



15 (18> Beak with the upper mandible greatly or 



very greatly surpassing the lower in 

 length, never very broad tiiwards the 

 base in dorsal aspect, more or less and 

 sometimes very strongly compressed later- 

 ally. Body above with green plumage. 

 IG (17). Upper mandible very strongly flattened, or 

 compressed laterally and high. Tail very 

 short, as in Heterorhynchus Coloration 

 of adults nearly similar in both sexes, each 

 with only a yellow superciliary line on 

 head. (Tongue not typically Drepanine, 

 but more so than that of Oreomyza, rather 

 elongated.) Pseudo7iesfor. 



17 (16). Upper mandible not very strongly com- 



pressed laterally, subcariniform. Tail not 

 extremely short. Colour of adults dis- 

 similar in the two sexes, the male with 

 crown of head bright yellow. (Tongue 

 degraded from the typical honey-sucking 

 organ, but Drepanine characters still dis- 

 tinguishable.) Psiftacirostra. 



18 (15). Beak with upper mandible only sUghtly 



(though distinctly) surpassing the lower 

 in length and more swollen laterally, often 

 very much so, so that in most forms the 

 nasal openings appear to be quite dorsally 

 placed and the beak very broadly rounded 

 above. Colour of plumage of body above 

 not always green. 



19 (20). Beak strong, but not excessively powerful 



and heavy, much less so than in the fol- 

 lowing. Plumage of body above ashy 

 grey in adults. Colour of sexes a little 

 different, the yellow of the head in 

 female less bright Loxioides. 



20 (19). Beak excessively heavy and powerful. Plu- 



mage of body above not ashy grey. 



21 (24). Upper mandible in dorsal aspect of very 



elongate triangular form. Upper and 

 lower mandibles well adapted to one 



