The muscles of the fore and hind limbs in Dasypus sexcinctus / by John Charles Galton.

  • Galton, John Charles.
Date:
[1868]
Catalogue details

Licence: Public Domain Mark

Credit: The muscles of the fore and hind limbs in Dasypus sexcinctus / by John Charles Galton. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    which I examined at the University Museum at Oxford. Uapp, moreover, in his mono- graph on this species of Anteater, makes no mention of this muscle; nor does Cuvier figure it in his plates of the myology of this animal. The subclavius is not mentioned in M. Pouchet’s monograph upon the (also non-clavi- eulate) M. jubata^. With regard to the claviculate M. didactyla, Meckel, in his monograph on this species^ makes no mention of the muscle in question; nor does Cuvier represent it in his drawings of this animal’s anatomy. In a specimen of the Two-toed Sloth [Choloepus didactylus) which I examined at Oxford, I found the subclavius in the form of a long and slender fusiform slip, which passed from the first rib to be inserted into the scapular third of the clavicle, and into the acromial process of the seapula. Cuvier, in his plates illustrating the myology of Bradypus tridactylus, gives a figure of a muscle which has a slight resemblance to the subclavius, but attaches to it the symbol of the jpectoralis minor^. In the Wombat {Fhascolomys wombatd) “ the subclavius arose by two heads, one a very delicate one, arising from the lower ribs and passing vertically upwards to end in a fine tendon; the other, a thick fleshy one, arose from the flrst rib and was inserted into the outer end of the clavicle, and, by means of fascia covering the supra-spinatus, into the whole length of the spine of the scapula In the Porcupine this muscle is of great length, strap-shaped, of nearly uniform breadth. It arises from the costal portion of the first rib, has a slight attachment to the scapular extremity of the clavicle, and is finally inserted, by means of a thin tendon, along the spine of the scapula, becoming continuous, moreover, with faseia which covers the supraspinatus and which is also attached to the anterior edge of the scapular factor of the deltoid. Upon reaching the shoulder the muscle broadens, and continues of this increased breadth until it reaches its insertion over the supraspinatus. The termination of this muscle in the above rodent is very fairly represented by Cuvier in one of his plates®. In Gratiolet’s monograph upon the Hippopotamus, there is a muscle described under the name “ scapulo-sternal,” which arises from an aponeurosis eovering the muscles of the supraspinous fossa of the scapula, and attached to the border of the coracoid and acromion, and terminates at the manubrium of the sternum. The following footnote is appended to the description of this muscle;—“ Ce muscle dont I’insertion s’etend sur le cartilage de la premiere cote, represente probablement le sous-clavier'^ ^. ^ Memoires sur le Grand Fourmilier, par Georges Pouchet. 1® livraison. Paris, 1867. ^ J. F. Meckel, “ Anatomie des zweizehigen Ameisenfresser,” Archiv fiir die Physiologic, fiinfter Band (Halle und Berlin, 1819). ® Op. cit. pis. 252, 253. The above extract is taken, by kind permission of Prof. EoUeston, from one of the volmnes of the ‘ Student’s Note Book,’ which is kept in the biological department of the University Museum at Oxford, for the purpose of recording anatomical and physiological observations of importance. ® Op. dt. pi. 229. fig. 2. ® Gratiolet, ‘ Eecherches sur I’Anatomie de I’Hippopotame,’ puhliees par les soins du Dr. Edmond Alix. Paris, 1867: p. 256.