384 BIRDS FROM HAWAIIAN ISLANDS STEJNEGER. 



III. Ratio between tarsus and tail. 



Phaornis myadestina 1 : 2.50 



Myadestes venezuelensis 1 : 3.70 



Myadestes toivnsendi 1 : 4.86 



Myadesfcs obscurus 1 : 4.67 



In the first table the difference between Phwornis and the nearest 

 Myadestes is 0.10, that between the extreme species of Myadestes 0.13; 

 in the second the same differences are 1.13 and 1.37, respectively ; while 

 in the third they are 1.20 and 1.16. 



The other parts of the structure agree as well. The bill, with nos- 

 trils and bristles, is ideutical, though somewhat stouter and stronger in 

 Phwornis ; the wing-formula is the same iu Ph. myadestina and M. ve- 

 nezuelensis ; and the tail of these two species is likewise identical iu 

 shape. I am also unable to detect any difference in the structure of 

 their feet. 



I am now fully satisfied that the two genera are very closely al- 

 lied, and shall include them both in the group Myadestes which I es- 

 tablished several years ago (Proc. U. S. Nat. Mus., v, 1882, p. 482). 



The relationship of Phceomis to Myadestes is of very great interest, as 

 it is the only instance of a peculiar Hawaiian genus of Passerine birds 

 being related to birds exclusively American in their present distribution. 



Measurements. 



Hemignathus stejnegeri (Wils.). 



Green Sickle bill. Iwi. 



The two Hemignathus sent this time differ very decidedly from those 

 previously (Pr. U. S. Nat. Mus., 1887, p. 93) designated by me with 

 doubt as Hemignathus obscurus (G-mel.) and afterwards described by 

 Mr. Scott B. Wilson as H. stejnegeri (Ann. Mag. Nat. Hist., 6 ser., vol. 

 iv, Nov., 1889, p. 400). Iu the first place they are larger ; wing 88-89 mm 

 against 76-82 ; chord of culmen 57-58 ram against 48-53. They are, more- 

 over, much more brightly colored, having the entire upper surface bright 

 yellow-olive (something between Ridgway's "olive green," Nomencl. 

 Col., pi. x, fig. 18, and " wax-yellow," pi. vi, fig. 7), several shades 

 brighter thau the rump in those received before ; the under surface from 

 chin to breast, as well as the flanks of the same color, only somewhat 

 lighter, shading into "canary yellow" (pi. vi, fig. 12) on the abdomen; 

 lores, blackj superciliary stripe, yellow; tibia, white. The birds of the 



