THE EXTREMITIES OF ORYCTEROrtJS CAPENSIS. 571 



the assistance of a skeleton at hand, from the lumbar aponeurosis, from the spines of the 

 first nine dorsal vertebra?, and from the nuchal ligament, being covered at the highest 

 point of origin, as Prof. Humphry remarks', by the retractor auria. Its interior half is 





inserted fleshy into the upper edge of the anterior half of the scapular spine, bcin 

 almost continued here into the scapular division of the deltoid, and having a small layer 

 of fibres detached from its inferior surface to be inserted into the fascia covering the 

 supraspinatus muscle. 



The rest of the trapezius radiates towards an irregularly oval aponeurosis, which is 

 inserted into the broadened-out tubercle or facet developed midway upon the spine of 



the scapula. 



The most anterior inserted portion of the muscle is in intimate relation with the 



terminal part of the acrotmo-basi/ar. 



The trapezius has no clavicular insertion whatever. 



Omo-liy old . — This muscle, as was the case in Dasypus, is absent. Prof. Humphry 

 makes no remark concerning either its presence or absence; nor is it figured by 



Cuvier. 



Cuvier does not mention this muscle when describing the hyoidean myology in 



Dasypus. He says, however, that in the Sloths it is entirely absent (" manque tout- 



a-fait" 2 .) 



It is remarked in Cuvier's 'Lecons' 3 that the omo-hyoids are wanting in the Sloth-. 



They are described in the Anteater; but no mention is made of either their presence or 



absence in the Armadillo. Prof. Owen, in his description of the muscles of the tongue 



of the Great Anteater, makes no mention of this muscle 4 . I conclude, therefore, that 



it is absent in this animal. 



The levator clavicirfce, which was present in the Armadillo, is absent in Orycteropus. 



St er no -mastoid. — The bulk of this muscle had its ordinary origin from t he mastoid 

 process of the temporal bone, and was inserted along the upper edge of the manubrium 

 sterni. On its middle third rested the principal lobe of the submaxillary gland. 



Another and smaller section of the muscle took origin, or was inserted, along the 

 whole of the middle line of the manubrium, meeting with its fellow of the opposite side 

 an arrangement similar to that in the Armadillo. It then ran along the outer edge of 

 the first- described section of the muscle, fusing with it, but on reaching the upper pari 

 of the neck was separated from it by the jugular vein, which passed between. At the 

 root of the ear it terminated, serving as a kind of depressor auris—nn arrangement very 

 clearly represented by Cuvier in one of his plates 5 . 



The cleido-mastoid, which rises beneath the above, from the mastoid process, runs 

 along on its outer side for the greater part of its course, but, finally diverging, is inserted 



into the sternal half of the clavicle. 



Subclavms. — This is a very well developed muscle, taking origin from the manubrium 

 of the sternum, and from the junction of the first rib with this bone— in part, too, by 



Loc 



3 Anat. Conip. vol. viii. p. 563. 



2nd edit. Taris, 1835, tome iv. l e partie, p. 490. 

 " On the Anatomy of the Great Anteater," Tran 



s Op. cit. pi. 255 



