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Show 492 PROF. ST.-GEORGE MIVART ON THE ALUROIDEA. [JUNE 6, MYOLOGY. The muscles of the Felida have, as every one knows, been most perfectly illustrated and described, with his peculiar nomenclature, by Straus-Diirckheim in his splendid work ' Le Chat/ The muscles of the Cat have also been shortly described under their commonly known names, and partly illustrated from fresh dissections, by m e \ The muscles of various Felida, of the Genet, and of the Hysena have been figured in Cuvier's magnificent ' Recueil des Planches.' The muscles of the Civet have been described by Prof. Macalister2 and by Messrs. Young3 and Davis4, and those of Crocuta by Dr. Watsons. "With these references, I shall content myself with shortly noticing the myological conditions which I have observed in the specimen of Genetta tigrina dissected by me, pointing out their resemblances and differences from those found by m e in the Cat, by Prof. Macalister in the Civet, and by Dr. Watson in Crocuta. Muscles of the Pectoral Limb. Pectoralis.-I found this in the Genet to be as in the Cat, save that one muscular mass corresponds with what I have described6 as the 1st, 2nd, and 5th parts of the Cat's pectoralis, while the part which seems to represent the Cat's 2nd portion extends three fourths down the humerus. What corresponds to the 4th part of the Cat's pectoral is here inserted into the head of the humerus around the tendon of the biceps, and (mainly) on the greater tuberosity. In Crocuta the pectoral is inserted into the whole length of the humerus from the bicipital groove to the elbow, and is divisible into a superficial and a deep stratum. The rectus abdominis extends the whole length of the sternum; and there are (as in the Civet) seven tendinous inscriptions. The scaleni are as in the Cat, except that the longer one reaches from the 5th to the 8th rib : from the 3rd to the 6th in the Civet. There are but two scaleni in Crocuta, but there are three in Hyana brunnea and the Civet. The subclavius is represented by a small muscle which goes from the first rib to the rudimentary clavicle, as also in the Civet. The trapezius has the same general conditions as it has in the Cat7. Its anterior part is very small in the Hyaenas8. The cephalo-humeral is as in the Cat, as it is also probably in the Civets and Hyaenas. In the latter it is of enormous strength9. 1 Journ. of Anat. and Phys. vol. xiv. (1879) p. 166. 2 Ibid. vol. ii. p. 205. 9 See 'The Cat' (John Murray, 1881), chap. v. 4 Proc. Eoy. Irish Acad. n. s. vol. i. 1869-74, p. 506. 5 P. Z. S. 1879, p. 79, pis. v. & vi. Some myological notes as to Hyana brunnea have also been published by Dr. Murie in Trans. Zool. Soc. vii. p 509 6 'The Oat,' p. 145. ' 7 Prof. Macalister reckons as part of the trapezius what I and Dr. Watson consider to be the cephalo-humeral (or levator humeri). 8 " Opposite the last two cervical spines." 9 Trans. Zool. Soc. vol. vii. p. 510. |