240 MARSHALL— A STUDY OF THE 



[June 19, 



EXPLANATION OF PLATES. 



All the figures are from enlarged freehand sketches, and are mostly drawn 

 to the same scale; they have been reduced almost one half in the reproduction. 



PLATE IV. 

 Fig. I. Tongue bone. 



Fig. 2. Dorsal view of brain with outline of head and nostrils. 

 Fig. 3. Brain viewed from the right side. 

 Fig. 4. Lateral view of pecten of the eye. 

 Fig. 5. Pecten seen from its free apex. 

 Fig. 6. Dorsal view of duodenal loop and pancreas. 

 Fig. 7. Ventral view of syrinx. 

 Fig. 8. Dorsal view of syrinx. 

 Fig. 9. Viscera seen from the right side. 

 Fig. 10. Ventral view of head, trachea and viscera. 

 Fig. 11. Female urogenital organs, ventral view. 

 Fig. 12. Ventral view of posterior portion of alimentary tract. 

 Fig. 13. Dorsal view of oil gland. 

 Fig. 14. Lateral view of the same. 



Fig. 15. Lateral view of viscera showing intestinal loops. Dotted lines repre- 

 sent the portion of the intestine covered by superficial folds. 



PLATE V. 



Fig. 16. Muscles of upper wing. 



Fig. 16a. Dorsal view of spinal cord and brachial nerve plexus. 

 Fig. 17. Superficial muscles of back and upper wing. 

 Fig. 18. Dorsal superficial muscles of hand. 

 Fig. 19. Deeper muscles of forearm. 

 Fig. 20. Muscles of ventral surface of hand. 

 Fig. 21. Muscles of dorsal surface of hand. 

 Fig. 22. Superficial muscles of back and outer arm. 



Fig. 23. M. propatagialis brevis removed to show more clearly its complex 

 arrangement. 



Fig. 24. Superficial muscles of breast and inner arm. 



Fig. 25. Deeper chest muscles. 



Fig. 26. Muscles of shoulder and chest. 



Figs. 27, 28 and 29. Upper arm muscles. 



Fig. 30. Origin of m. coracobrachial posterior. 



Fig. 31. Superficial muscles of thigh. 



Fig. 32. M. caud.-ilio flexorius removed to show complex arrangement. 



Fig. 33. Muscles of thigh viewed from median surface. 



Fig. 34. Deeper thigh muscles. 



Fig- 35- Deepest muscles of thigh. 



