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Show 96 MESSRS. WATSON AND YOUNG ON THE [Jail. 14, Serratus magnus arises from the transverse processes of the five posterior cervical and first dorsal vertebrae, and by seven costal slips from the eight anterior ribs, excluding the first. It is inserted into the vertebral border and part of the ventral surface of the scapula. The muscle is similarly arranged in H. striata. In the Civet the cervical part is limited to four vertebrae ; and in the Dog the costal attachment is less by one digitation. The intercostal series of muscles are normal. Triangularis sterni strong and well marked. It takes origin from all the pieces of the sternum except the first, and passes to the cartilages of the second to the sixth ribs inclusive. A separate muscular band arises from the side of the eighth sternal segment, and runs transversely to the posterior margin of the seventh costal cartilage; though distinct from the triangularis and interposed between it and the intercostal muscles, it can only be regarded as an aberrant slip of that muscle. The diaphragm has the ordinary attachments. It possesses no special aperture for the passage of the vena cava, that vessel passing with the aorta behind the crura. Of the abdominal muscles the external oblique is from the last eleven ribs to its usual insertion. The internal oblique is easily separable from the transversalis. Rectus abdominis, from the posterior extremity of the symphysis pubes, is inserted into the seven anterior costal cartilages, close to the sternum. The prolongation of the rectus to the first rib is usual in Carnivores. As in H. brunnea, there is no pyramidalis ; this muscle is also absent in //. striata. There is but a single supracostalis; it extends from the cartilage of first rib to the aponeurotic insertion of the rectus opposite the third and fourth costal cartilages. Two such muscles are noted in H. brunnea, whilst the Dog agrees with H. crocuta in possessing only one (" musculus in summo thorace situs " of Douglas). Coccygeus is attached to the roots of the transverse processes of the first three coccygeal vertebrae and to the ischial spine. The remaining muscles of the region, i. e. those in relation to the generative organs and rectum, are described in a previous communication. The tail is supplied with a levator caudee, which arises from articular processes of the last three lumbar vertebrae, and is reinforced by muscular slips from the laminae of the caudal veitebrae, into the spines of which it is inserted by means of delicate tendons. The depressor caudee, from the bodies of sacral and coccygeal vertebrae, receives also a special muscular slip from the pelvic aspect of the ilium. Its insertion is by narrow tendons into the bodies of the caudal vertebrae. Laterales caudee are constituted by the intertransversales of the caudal region. Muscles of the Fore Limbs. Pectoralis major, from the whole length of the sternum, and ex- |