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Show 388 DR. B. C. A. WINDLE AND MR, F. G. PAfcSONS ON THE [Apr. 6, In the Ursidae it is more often present than not. In the Mustelidae it is not only present but is quite a separate slip. Subclavius.-This is a very small muscle rising from the inner end of the first rib and inserted into the spicular clavicle. We have only records of it in Viverra civetta (12) and Genetta (16, 18). It never seems to occur outside the Viverridae, though from its insignificance it might easily be overlooked. The claviculo-scapu-laris, which is such a distinguishing feature of Hystricomorphine Rodents (XLI.), is never found in Carnivora. Levator anguli scapulce and Serratus magnus.-These two muscles, as in Rodents, form one continuous plane rising from a large number of the posterior tubercles of the cervical transverse processes and from a large number of the anterior ribs (see fig. 6, p. 382). The latter origins interdigitate with the scalenus longus and the external oblique. Although the muscle forms one sheet it is well to emphasize the distinction between the two parts, since the levator anguli scapulae is supplied by the cervical nerves and the serratus magnus by the posterior thoracic, or nerve of Bell. Meckel (XXXIX.) speaks of the levator anguli scapulae as a separate muscle coming from the atlas in the Dog, Badger, Otter, and Marten. In the D o g we have no other records of any origin from the atlas and regard Meckel's specimen as a variation, but in the other three animals that which he describes as the levator anguli scapulae is undoubtedly the rhomboideus profundus. The insertion of the combined muscles is into the dorsal or vertebral part of the subscapular fossa of the scapula, the attachment being much more strongly marked anteriorly than posteriorly. The following table gives the exact origins in various animals :- » » (7) Cryptoprocta ferox (10) . . >. (13) „ (14) Genetta tigrina (16) » (17) „ vulgaris (18) . . . . >. (27) „ (28) „ (39) .... .. 2-7 .. 3-7 .. 3-7 9 .. 3-7 .. 2-7 .. 4-7 .. 3-7 .. 4-7 .. 2-7 .. 3-7 .. 1-7 .. 1-7 .. 3-7 .. 2-7 . . 2-7 .. 3-7 .. 4-7 ? .. 3-7 .. 2-7 C. V. ?* i» 55 15 55 55 55 J) 5) 11 11 ., 51 55 51 55 55 15 55 55 1-9 ribs. 1-10 „ 1-10 „ 1-10 „ 1-8 „ 1-8 „ 1-7 „ 1-8 „ 1-9 „ 1-6 „ 1-7 „ 1-8 -„ 1-8 „ 1-8 „ 1-8 „ 1-8 „ 1-8 „ 1-7 „ 1-7 „ 1-10 ., i-io „ |
