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SMITHSONIAN MISCELLANEOUS COLLECTIONS 



[vol. 50 



SAD Saccus abdominalis dexter. Figs. 6, 11, and 12. 



SAS Saccus abdominalis sinister. Figs. 6, II, 12. 



SASD Dorsal wall of the left Saccus abdominalis. Fig. 8. 



SC Saccus cervicalis. Figs. 7 and 11. 



SC 1 Saccus cervicalis, anterior portion. Fig. 12. 



SC 2 Saccus cervicalis, pars ovalis. Fig. 12. 



SCL Saccus interclavicularis. Figs. 2, 11, and 12. 



SCO 4 Os sternocostal quartum. Fig. 1. 



SCO 5 Os sternocostale quintum. Fig. 1. 



SI Portion of the ventral surface of the lung covered by the Sacci 



intermedii, anterior and posterior. Fig. 9. 



SI A Saccus intermedins anterior. Figs. 1, 11, and 12. 



SIAD Dorsal wall of the Saccus intermedius anterior. Fig. 8. 



SICL Portion of the ventral surface of the lung covered by the Saccus 



interclavicularis. Fig. 9. 



SIP Saccus intermedius posterior. Figs. 11 and 12. 



SIPD Dorsal wall of the Saccus intermedius posterior. Fig. 8. 



ST Sternum. Figs. 1 and 2. 



STC Crista sterni. Figs. 1 and 2. 



T Entrance to trachea. Fig. 12. 



TR Trachea. Figs. 2, 7, 11, and 12. 



V Vestibulum. Fig. 10. 

 VE Vertebra. Fig. 1. 



VP Vena pulmonalis. Fig. 9. 



VPAN Processus anterior vertebrae. Figs. 3 and 4. 



VPP Processus posterior vertebrae. Fig. 4. 



X Limiting wall between the Saccus interclavicularis and the Sacci 

 intermedii anteriores. Fig. 8. 



Y Muscles of the neck. Fig. 7. 



