. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 970 PISCES. Fig. Myology of the Perch. After Cuvier. men by strong fleshy origins covered with dense aponeurosis. Above the pelvic arch they di- vide into numerous tendinous slips which run backwards in separate sheaths, each successively approximating the middle line of the body, where they are inserted on the dorsal aspect of each vertebra as far as the extremity of the tail. The inferior lateral muscles, like the prece- ding, take their origin in the lumbar region, and present nearly the same arrangement, only t
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 970 PISCES. Fig. Myology of the Perch. After Cuvier. men by strong fleshy origins covered with dense aponeurosis. Above the pelvic arch they di- vide into numerous tendinous slips which run backwards in separate sheaths, each successively approximating the middle line of the body, where they are inserted on the dorsal aspect of each vertebra as far as the extremity of the tail. The inferior lateral muscles, like the prece- ding, take their origin in the lumbar region, and present nearly the same arrangement, only their tendons are much more slender than those of the superior set. At their termination each tendon bifurcates, allowing that appropriated to the succeeding vertebra to pass through it so as mutually to form sheaths to each other, so that they are all, except the last, both peij'orati and perforantes. Osseous Fishes have no special muscles ap- pointed for the movements of the head, but in the Rays there are three destined to this office, one serving to move the head upon the trunk, the other two raising and depressing the extre- mity of their elongated snout. The former is situated upon the upper as- pect of the body above the branchial cavity. It arises from the vertebral column and from the anterior portion of the pectoral zone. Its inser- tion is into the posterior region of the head, which it raises towards the back. Of the two muscles of the snout, the superior arises also from the scapular cincture by a short fleshy belly, from which a thin cylindrical ten- don is given off. This runs in a mucous sheath, above the branchiae to the base of the snout where it is inserted, serving of course to raise it upwards. The other is situated beneath the body within the branchial cavity, where it arises from the anterior cartilages of the vertebral column, [t runs obliquely outwards, and afterwards in- wards, so as to describe a curvature, the con- vexity of which is external. Its in
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