STRUTHIONES 



513 



The structure of the skull of the emu : is not widely 

 different from that of the skull of Ehea, The vomer is 

 widely bifurcate behind, where it articulates both with 

 pterygoids and palatines. The basipterygoids articulate 

 with the pterygoids at the extreme posterior end of the 



il 



FIG. 243. PELVIS OF Rlica (AFTER MIVART). 



il, ilium ; Ip, peetiueal process ; at, antitrochauteric process ; st, supratrochanteric process ; 

 jjs, interobturator process ; ;', ischiuin ; p, pubis. 



latter, instead of nearly halfway along them, as in other 

 birds. The maxillo-palatines are hollow swollen plates, 

 which unite with the vomer and premaxillaries, but come 

 apart in the dried skull. The descending process of the 

 lacrymal has a foramen, as in Ehea. It joins the thin 

 lamina of the ectethmoid. The descending process of the 



1 W. K. PARKER, ' On the Structure and Development of the Skull in the 

 Ostrich Tribe,' Phil. Trans.. 1808, p. 113. 



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