1'SITTACI 



this paper references will be found to previous figures and 

 descriptions. It has features which absolutely distinguish 

 this group of birds. 



The entoglossal has a considerable median foramen, or 



B 



C 



u 



FIG. 131. HYOID OF Stringops (AFTER MIVART). A. DORSAL ASPECT. 

 B. VENTKAL. C. LATERAL. 



I/, basihya! ; r, eutoglossum : p. jiuraliyal profess : it, uruhyal ; /i'o, liypobranebial ; 



<!>, ccratobranchial. 



more usually is composed of two separate pieces united in front 

 by cartilage. The basihyal is broad, and it develops on either 

 side a forwardly directed piece (figs. 131-3), for which Dr. 

 MIVART has suggested the name of parahyal piece. This 



