339 



r.Md.S. — 



Fig. 334. Air sacs of duck, from Wiedersheim. ^o, anonymous, /?/, pulmonary 

 artery; C, cervical sac; Cd, coracoid; D, intestine; Dlha, diaphragm; F, furcula; 

 H heart ; lAl/dS, left abdominal sac ; led, Ics, ligamentum coronarium hepatis ; Lg, 

 lune ; Ifcd, lig. coraco-furcularis ; IL, liver ; hh, suspensor of liver ; M, stomach ; Oe, 

 oesophagus ; P, pectoralis ; /, pectoral sac ; fa, artery to, pv, vein from, pectoralis ; 

 rL liver • rAidS, right abdominal sac ; S, subclavian ; s, partition between the ante- 

 rior diaphragmatic and the supracoracoid sac ; i^, between anterior and posterior dia- 

 phragmatic sacs; T, trachea; v, anterior wall of supracoracoid sac; Va, anonymous 

 vein ; *, entrance of bronchi into lung ; t, anterior, tt, posterior diaphragramatic sac. 



