AORTIC ARCHES OF BIRDS — GLENNY 



547 



Figure 111. — Arrangements of the dorsal carotid arteries and the associated cervical and 

 thoracic arteries in Aves Bicarotidinae (ventral views). Types (for code see pp. 544-546): 

 a, A~l; b, A-2-s; c, A-3; d, A-4. 



