Identifier: myologyofravenco00shuf (find matches)
Title: The myology of the raven (Corvus corax sinuatus.) A guide to the study of the muscular system in birds
Year: 1890 (1890s)
Authors: Shufeldt, Robert W. (Robert Wilson), 1850-1934
Subjects: Birds -- Anatomy Muscles Ravens
Publisher: London, New York, Macmillan and co.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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ianus it led me to consider the presentmuscle as only a part of the extensor brevis digitorumin that form, and I said in effect that the extensor brevisdigitorum is a muscle that may be taken as an ampli-fication of the muscle I have described in the Eaveri asthe extensor hallucis brevis. But even here in Geococcyx the short extensor of thehallux has a certain amount of individualization, though o it is not fully differentiated from the other part of thisextensor brevis (Fig. 64 bis). It, however, is not at-tached more than half-way down the anterior aspect ofthe shaft of the tarso-metatarsus, at which point itterminates in a delicate thread-like tendon ; this passesdirectly over the upper border of the accessory meta-tarsal, and along the top of the basal joint of the hallux,to become inserted in the usual manner in the baseof the claw-joint. Now the remainder of the extensorbrevis digitorum is attached down the shaft of the tarso-metatarsus, as far as the distal trochlese; the outer
Text Appearing After Image:
FIG. 63 bis.—Pelvic limb, right side, of Geococcyx californianus, same specimen asis shown in Fig. 62 6w. The superficial layer of muscles have here beenremoved, and those found beneath them brought more fully into view.Life-size, by the author, from his own dissections. 222 THE MYOLOGY OF THE RAVEN. portion of it developing a tendon about half-way down,which is concealed by the carneous fibres which overlie it.This tendon passes round beneath the trochlea for thefourth toe, and is really inserted on the underside oftliebasal joint of this digit at its proximal extremity; sothat in the case of this toe it seems as though it wouldact almost as a flexor. With the second and third toes,however, the carneous fibres of the muscle under con-sideration are continued all the way to the trochlese,where they terminate, in either case, in a strong, flattendon, which passing over the joint is inserted on theupper side of the proximal extremity of the basal joint.Here, of course, the muscle acts

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