Fig. 7. Scardafella inca. Medial view of left half of thorax. (× 1.)
Key
(Applies also to Figs. 5 and 6.) Numerals not used are those used for Progne subis for which no homologous artery occurs in Scardafella inca.
1. Subclavian artery.
2. Coracoid artery.
3. Thoracic artery.
4. (Unnamed.) Supplies Mm. coracobrachialis posterior and sternocoracoideus.
4a. (Unnamed.) Supplies M. coracobrachialis posterior.
6. Sternal artery. (Shown as it appears on right side. Left sternal artery not so extensive.)
6a. (Unnamed.) Supplies M. sternocoracoideus.
7. (Unnamed.) Supplies M. subcoracoideus.
8. (Unnamed.) Supplies coracoid-sternal articulation.
9. Pectoral artery.
10. Axillary artery.
12. (Unnamed.) Supplies M. supracoracoideus.
14. Carotid artery.
15. (Unnamed.) Supplies M. supracoracoideus.
LITERATURE CITED
American Ornithologists' Union