MUSCLES CONSIDERED IN THIS STUDY 



1. Compressor muscle of the labrum. 



2. Dilator muscle groxip of the labrum. 



3. Ventral (posterior) muscle of the labrum. 



4. Dorsal (anterior) muscle of the labrum. 



5. 6, 7. Dorsal dilator muscles of the cibarinm. 



8. Dorsal dilator muscle of the cibarium. 



9. Dorsal dilator inuscle of the anterior region of the pharynx. 



10. Muscle of hypo pharyngeal bar Y, 



11. Dorsal dilator muscle of the pharynx. 



1 1 A. Dorsal dilator muscle of the pharynx. 



12. Compressor muscle group of the cibarium. 



13. Compressor muscles of the anterior region of the cibarium. 



14. Hypopharyngeal muscle of the mandible. 



15. Anterior dorsal dilator muscle of the salivariwn. 



16. Dorsal salivary cup muscle. 



17. Anterior salivary cup muscle. 



18. Lateroventral salivary cup muscle. 



19. Muscle of the hypopharynx. 



20. Dorsal (anterior) muscle of the labium. 



21. Ventral (posterior) muscle of the labium. 

 2 1 A. Muscle of the labium. 



22. Muscle of the prementum 2. 

 22A. Muscle of the prementum i. 



23. Depressor muscle of the labial palpus. 



24. Levator muscle of the labial palpus. 



25. Muscle of the labial palpus. 



26. Muscle of the labial palpus. 



27. Muscle of the labial palpus. 



28. Flexor muscle of the glossa. 



29. Flexor tnuscle of the paraglossa. 



30. Ventral dilator muscle of the pharynx. 



31. Lateral dilator muscles of the pharynx. 



32. Dorsal appressor muscle group of the cibarium. 



33. Muscles of the ventral wall of the cibarium. 



34. Laterodorsal muscle of the cibarium. 



35. Lateral muscle of the posterior cibarial region. 



36. 37, 38. Maxillary muscles. 



39. Median muscle of the labium. 



40. Retractor muscle of anterior pharyngeal region. 



41. Muscle of the labium. 



34 



