714 MISS B. LINDSAY ON THE AVIAN STERNUM. [June 16, 



MM. Cuvier et G. de St.-Hilaire ; presentees a rAcademie 

 des Sciences, 1830. (Abstract in ' Les Annales des Sciences 

 Naturelles.") 



2. C. G. Carus. Lehrbuch der Zootomie (pp. 158, 1/9). 

 Leipzig, 1834. 



3. C. Gkgenbaur. (For first view.) Grundziige der vergl. 

 Aiiat. 1859. 



4. Harting. L'Appareil Episternal des Oiseaux. Utrecht, 

 1864. 



5. C. Gegenbaur. (For second view.) Untersuchungen zur 

 vergl. Auat. der W'irbeltliiere : 2 Heft, Schultergiirtel der 

 Wirbeltliiere. Leipzig, 1865. 



Grundriss der vergl. Anat. 1877. 



6. W. K. Parker. A Monograph on the Structure and Develop- 

 ment of the Shoulder-Girdle and Sternum in the Vertebrata. 

 Eav Soc. 1868. 



7. T. H. Huxley. Manual of the Anatomy of Vertebrated 

 xAnimals. London, 18/1. 



8. Newton and PARKhR. Eucycl. Brit., article " Birds." 



9. A. GoTTE. Beitiage z. vergleich. Morphol. d. Skeletsystems 

 d.Vi'irbelthiere. Brustbein uud Schultergiirtel. Archivfiir mikr. 

 Anat. vol. xiv. 1877. 



10. C. K. Hoffmann. Beitrage z. vergleich. Anat. d. Wirbel- 

 thiere. Niederlanrlische Archiv f. Zool. vol. v. 1879. 



11. A. Sabatier. (For theory of Avian precoracoid.) Com- 

 paraison des ceintures et des membres anterieurs et posterieurs 

 d. la Serie d. Vertebre's. Montpelier, 1880. 



12. G. RuGE. (For homologies of Mammalian interclavicle 

 so-called.) Untersuch.iiberEutwick.amBriistbeiue d.Menschen. 

 Morphol. Jahrbuch, vol. vi. 1880. 



13. F. M. Balfour. Comparative Embryology, Vol. ii. ch. 

 xviii., XX. 1881. 



14. P. Albrecht. (For homologies of so-called interclavicle of 

 Mammalia.) Sur les Elements Morphologiques du Manubrium 

 du Sternum chez les Mammiteres. Bruxelles, 1884. 



EXPLANATION OF THE PLATES. 



The letters C.C. here and in the woodcuts indicate that the specimen figured is 

 in the Collection at the University Museum of Zoology, &c., Cambridge. 



General Letteeing op all the Plates. 



a.l.p. Anterior-lateral process. 



p.l.p. Posterior-lateral process. 



r.m. Median band of the rectus abdo- 

 minis muscle. 



r.l. Lateral band of the rectus abdo- 

 minis muscle, atlaehed to jj.l.p. 



y. Line of undifferentiated muscle, 

 bordering on the yolk-siic, and 

 curved to make room for it. 



