1897.] 



MYOLOGY OF THE TEEEESTRIAL CAEKITOEA. 



381 



Bhomboideus profundus (Trachelo-scapular, Levator scapulae 

 minor). — This has been described by Macalister (XXXVII.) as a 

 lutrine muscle, but our own observations make us regard it as one 

 of the most characteristic features o£ the whole of tbe Mustelidae. 

 It occurs in GaUctis vittata (63), Galictis hai-bara (64), Mustela 

 putorius (65), Ictonyx zorilla (69), Ictonyx I'lbyca (70), Meles taxus 

 (71, 72), Liitra vulgaris (74, 75, 79), and Lutra cinerea (78). 



Omo-trachbjm 



Rhomb. , 

 profundus. 



■^ - rhom: cery. 



Neck-muscles of Ictonyx libyoa. 



Outside the Mustelidae we only iind it in t\A o specimens of 

 Cercoleptes (61, 62), which is of increased interest when we recall 

 the evidence of the omo-hyoid in that animal. 



The origin is from the transverse process of the atlas, the 

 insertion into the root of the scapular spine. In many cases the 

 muscle has been described either as part of the rhomboideus 

 capitis or of the acromio-trachelian, since it is connected with the 

 latter at its origin and with the former at its insertion. It is 

 supplied by the cervical nerves (see fig. 5). 



Hectus cajpitis ventralis (anticus) major and minor. — Both these 

 muscles have the same attachments as in Man, the major coming 

 from 3rd, 4th, 5th, and 6th cervical transverse processes, and the 

 minor from the ventral arch of the atlas ; thej"^ are both inserted 

 into the basioccipital. 



Loiigus colli. — The longus colli consists chiefly of the anterior 

 and posterior oblique parts : the latter rises from the anterior 

 thoracic centra as far back as the 5th or 6th, and is inserted into 

 the transverse processes of the posterior cervical vertebrae ; the 



