.Jnatomy of the Hoatzin. 



291 



early clown attached to its point ; this condition is to be seen 

 not only upon the points of the primaries^ but also on the 

 ends of the feathers of the entire plumage." These conclu- 

 sions seem to be identical Avith those of Dr. Landois and 

 Mr. Davies ; it must be admitted^ however^ that the title of 

 Mr, Bartlett's paper is a little misleading in this respect, and 

 would hardly suggest that the paper contained the important 

 morphological facts referred to. 



Syrinx. — This organ has been described by Johannes 

 Miiller'^'j and more recently, as well as more fully, by 



Fijr. 4. 



n 



Syrinx of Opisthocomus cristaius. 



a, insertion of syringeal muscle ; b, fibrous band continuous with 

 syringeal muscle. 



Ber. Akad. Wiss. Berlin, 1841, p. 177. 



