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XXVI. — A Monograph on the general Morphology of the Myxinoid Fishes, based on 

 a study of Myxine. Part II. The Anatomy of the Muscles. By Frank J. Cole, 

 B.Sc. Oxon., Lecturer in Zoology, University College, Reading. Communicated 

 by Dr R. H. Traquair, F.R.S. (With Four Plates.) 



(Read July 16, 1906. Issued separately June 20, 1907.) 



CONTENTS. 



1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 

 15. 

 16. 

 17. 

 18. 

 19. 



Introduction 

 Histology of Muscles 

 Tentacularis posterior 

 Tentaculo-ethmoidalis 

 Transversus oris 

 Nasalis 



PAGE 



. 683 



. 684 



. 686 



. \ . 687 



. 688 



. 691 



Ethmoideo-nasalis 692 



Palato-etlimoidalis superficialis . . . 693 



Palato-ethnioidalis profundus .... 694 



Quadrato-palatinus 695 



Palato-coronarius 696 



Copulo-tentaculo-coronarius .... 697 



Goronarius 699 



Copulo-ethmoidalis 700 



Hyo-copulo-glossus 701 



Copulo-glossus superficialis .... 703 



Copulo-glossus profundus .... 705 



Copulo-copularis 709 



Longitudinalis linguae 712 



20. Perpendicularis 



21. Copulo-palatinus 



22. Hyo-copulo-palatinus 



23. Copulo-quadratus superficialis 



24. Copulo-quadratus profundus 



25. Velo-quadratus . 

 26 



PASK 



715 

 716 

 717 

 718 

 719 

 721 



Velo-spinalis 722 



27. Cranio-hyoideus 723 



28. Constrictor pharyngis 725 



29. Constrictor branchiarum et cardire . . . 727 



30. Parietalis 739 



31. Obliquus 743 



32. Rectus 745 



33. Geography of Muscles 747 



34. Sphincter cloacae 749 



35. Transversus caudalis 750 



36. Cordis caudalis 751 



Literature 753 



Explanation of Plates 754 



1. Introduction. 



The first part of this work was published in the Transactions of the Society for 

 1905, when the present section was promised by the end of the same year. But the 

 labour of revising the whole work on the sections and of posting all the muscles in the 

 extensive series of key sections along with the skeleton has been much greater than was 

 anticipated, and hence the delay. This labour, however, is amply repaid by the 

 knowledge that one is now in a unique position for studying the blood-vessels and 

 nerves ; for not only has every fraction of the skeleton and muscles been microscopically 

 explored, but the information obtained is immediately and completely available on 

 reference to the key sections. When the whole work is completed and all the systems 

 have been entered in these sections, I hope to obtain a grant to enable me to publish 

 them as an atlas. As far as I am aware, no animal has been studied throughout in this 

 way before. 



The terminology adopted in the present part (with a few slight alterations) is that of 

 P. Furbringer (7). I have made no attempt to revise it, for the same reason that 



TRANS. ROY. SOC. EDIN., VOL. XLV. PART III. (NO. 26). 98 



