Fig. 1. Sternum, with coracoids and furcula, of Thalasstarche melanophrys, from 
in front. Reduced. 
Fig. 2. The same, from the side. 
Fig. 8. Sternum and pectoral arch of Pelecanoides wrinatria, from in front. 
Fig. 4. The same, from the side. 
Fig. 5. The same, of Cymochorea leucorrhoa, from in front. 
Fig. 6. The same, from the side. 
Fig. 7. The same of Fregetta melanogastra, from in front. 
Fig. 8. The same, from the side. 
Fig. 9. Outline of posterior margin (right side) of sternum of Ossifraga gigantea. 
Reduced. 
Fig. 10. The same of Daption capensis, 
Fig. 11. The same of Fulmarus glacialis. 
Fig. 12. The same of Aezpetes antarcticus. 
Fig. 18. The same of Thalasseca glacialoides. 
Fig. 14. The same of Prion desolatus. 
Fig. 15. The same of Pagodroma nivea. 
Fig. 16. The same of Bulweria columbina. 
Fig. 17. The same of istrelata lessoni. 
Fig. 18. The same of Adamastor cinereus. 
Fig. 19. The same of Majaqueus equinoctialis. 
Fig. 20. The same of Puffinus anglorum. 
