40 BIRDS OF THE HAWAIIAN GROUP. 



ee. Head and neck in the male yellow, 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; upper 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 bluish grey; gonys 



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



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



thick and clunis}- ; gonys curved (Page 56. ) Chlor idops. 



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



long and much decurved. 



g. Culmen, cutting edge of mandibles and gonys 

 all perceptibly decurved, except in Hclci-orlivmlnts 7i'//sou/ where the gonys is straight 

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



h. Culmen very 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. tapper 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. ) Hetnigna'thuS. 



kk. Plumage chiefly 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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