40 BIRDS OF THE HAWAIIAN GROUP. 



ee. Head and neck in the male j^ellow, female olive green; 

 edge of primaries slightly' yellow olive; feet light brown (in the skin). 



(Page 53.) Psittaciros'tra. 

 dd. Back with more or less distinct blackish or brownish shaft 

 streaks; npper mandible horn-color; feet black or bluish black. 



(Page 54.) Telespi'^a. 

 bb. Upper mandible exceeding the lower by not more than .10; bill very 

 wide and deep; depth not less than .58, and width not less than .38. 



f. Wing more than 4.00; bill blnish grey; gonys 



straight or very slightly decurved (Page 55.) Rhodacan'this. 



flf. Wing less than 4.00; bill dull flesh color and very 



thick and clumsy; gonys curved (Page 56.) Chlor'idops. 



aa. Bill of various forms but never deeper nor broader than .30; or, if so, very 

 long and much decurved. 



g. Culmen, cutting edge of mandibles and gonys 

 all perceptibly decurved, except in Hcteyorliyncluis ivilsoni where the gonys is straight 

 (where curve of bill is questionable, culmen more than .50). 



h. Culmen verv long and remarkably curved; 

 culmen never less (usually much more) than .70. 



i. Upper mandible at least one-third its 

 length longer than the lower mandible; color never red or black. 



(Page 51.) Heterorhyn'chus. 

 ii. Upper mandible not one-third longer 

 than the lower mandible; tip of the wings falling short of the tip of the tail (in the 

 skin) by less than the length of the tarsus. 



j. Bill light vermilion (becoming de- 

 cidedly paler in old skins); primaries and tail feathers black. (Page 42.) Vestia'ria. 



jj. Bill for the most part black or 

 blackish brown ; lores black or brownish black. 



k. Plumage chieflv olive; prima- 

 ries never edged or tipped with whitish ; bill sickle-like. (Page 50.) Hemigna'thus. 



kk. Plumage chiefl}' black ; pri- 

 maries edged or tipped with whitish. 



I. With yellow feathers over 

 the rump in adults; under tail coverts elongated and loose-webbed; bill less curved. 



(Page 41.) Drep'anis. 



II. With no yellow in the plu- 

 mage at any age; bill much stronger and much more curved; under tail coverts 



normal (Page 42.) Drepanoram'phus, 



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