Vol. xiv.j Leach, The Myology of the Bell-Magpie. y 



Stycpera agrees with the AustraUan Raven, Gynmorhina, and 

 Craclicus in this. Shufeldt's account of this muscle in the 

 American Raven agrees generally with that given by Owen in 

 the general account of the " Comparative Anatomy of Vertebrates," 

 vol. ii., p. III. Shufeldt says : — " The fibres pass directly 

 forward, as a narrow ribbon, to spread out as a thin integumental 

 layer to be lost over the region of the shoulder blade." This is 

 quite different from the arrangement described above. 



11. The dermo-iilnaris [8] arises, in Strepera, low down on the 

 third and fourth ribs. It passes directly into the post-patagium 

 as a wide, fleshy, conspicuous muscle. It soon narrows to a strong 

 tendon, which runs on to join the fascia overlying the end of the 

 ulna about the elbow joint. In the Australian Raven [8rt] there 

 is a third tendinous origin on the fifth rib. 



12. The dermo-hnmeralis [9] arises as a tough fascia attached 

 to the post-pubic process. It runs in a definite semicircular course 

 past the ventral feather tract, to be inserted by a fan-like tendon 

 into the top of the pectoralis major (49). This course is followed 

 in Strepera, Gymnorhina, the Australian Raven, and Cracticus. 

 Furbringer figured a similar arrangement in Anser, and called 

 the muscle a part of the pectoralis major {M. pectoralis pars 

 abdominalis) . 



The dermo-hnmeralis gives off fibres to the ventral feather 

 tract, and is connected with the dermo- pectoralis (13). As the 

 latter joins muscles (3), (6), and (8), the dermo-hnmeralis is thus 

 brought into connection with the other muscles of the dermal 

 system. 



13. The dermo-pectoralis [10] underlies the ventral feather 

 tract on each side of the breast. Its fibres continue forward to, 

 join the fasciculus made up by the dermo-tcmporalis (3), the derino- 

 tensor patagii (6), and the cleido-trachealis, (8). It also receives 

 fibres from the dermo-hnmeralis (12 ). 



THE MUSCLES OF THE HEAD 



(Including the muscles of the hngual apparatus, trachea, and 

 those of the eye and ear). 

 These have been conveniently grouped by Shufeldt as follows : — s 

 14-20. Muscles of the Head. 

 21-27. Muscles of the Tongue. 

 28-36. Muscles of the Air-passages. 

 37-48. Muscles of the Eye and Ear. 



The Muscles of the Head (14-20). 



Except in the case of muscle 17, the eittotympaniciis, I find that 

 the muscles of Strepera agree with Shufeklt's description of the 

 muscles in the American Raven. The Australian Raven. 

 Gymnorhina, and Cracticns also agree. 



The muscles are — 



14. The temporal. 



15. The masseter. 



