1894. 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



305 



are nearly allied. It is present in the Swallows, but not in the Flycatch- 

 ers or Thrushes; is well developed in such stout-billed Finches as Cardi- 

 nalis and Hahia, missing in Coecothraustes. It appears as a slender 

 splint in PlectropJianes and C((lcarias, and reaches a considerable size 

 in Rhamphoccelus and Pyranga, while it is lacking in Phcenicophilus. 

 None of the Drepanididte and Meliphagidie examined have a palato- 

 maxillary. 



None of the Mniotiltidai or Tanagridie have the angle of the jaw pro- 

 duced, nor do the genera Ccereha and Olossoptila. In Certhiola, how- 

 ever, the angle of the jaw is slightly produced, and this occurs in 

 Oreomyza, Vestiarittj Ilimatione, and to a less extent in Hemignatlms. 

 The production of the angle is marked in Acrulocereus., and reaches a 

 maximum in Anthochoera carunculata. Acanthorhynchtis and Tropido- 



FiG. 6.— Tongues of Dendroica tigrina: (2) Dendroica coronata; (3) Glossoptila campentris; 

 Acanthorhynchus tenuirostris; (5, d) Ccereha ci/anea; (7) Coereba ccerulea : all enlarged. 



i4) 



rhynchns do not have the angle of the jaw produced, although they are 

 "tenuirostral" birds, and the character is one that seems to have no 

 correlation with length of bill. Like many other points in the anatomy 

 of the Passeres, more observations are needed regarding the occurrence 

 of this character, although it would seem that it should be of some 

 importance. It does not occur in many birds, but is found in some of 

 the Icteridie. 



The tongue in the Mniotiltidne is of moderate length, with very slightly 

 upturned margins, cleft a little at the tip, and slightly brushy. Den- 

 droica maculosa and D. tigrina represent the extremes so far as speci- 

 Proc. N. M. 94 20 



