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Show 1897.] MYOLOGY OF THE TERRESTRIAL CARNIVORA. 381 Rhomboideus profundus (Trachelo-scapular, Levator scapulae minor).-This has been described by Macalister (XXXVII.) as a lutrine muscle, but our o w n observations make us regard it as one of the most characteristic features of the whole of the Mustelidae. It occurs iu Galictis vittata (63), Gallctls barbara (64), Mustela putorlus (65), Ictonyx zorilla (69), Ictonyx libyca (70), Meles taxus (71, 72), Lutra vulgaris (74, 75, 79), and Lutra cinerea (78). Fig. 5. - OCC C& EST. OMO-WACHHJAN RHOMB. „ PROFUNDUS. 1 Neck-muscles of Ictonyx libyca. Outside the Mustelidae we only find it in two specimens of Cercoleptes (61, 62), which is of increased interest when w e 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). Rectus capitis ventralls (anticus) major and minor.-Both these muscles have the same attachments as in M a n , the major coming from 3rd, 4th, 5th, and 6th cervical transverse processes, and the minor from the ventral arch of the atlas; they are both inserted into the basioccipital. Longus 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 vertebras : the |