OCR Text |
Show 1869.] THE MYOLOGY OF MENOPOMA. 257 front of that orifice it is represented by a more or less marked tendinous interval, or linea alba, in the midst of the superficial muscles of the ventral portion of the abdominal muscular mass. The third and fourth linear divisions are placed one on each side of the throat, trunk, and tail. In the throat region the anterior end of this furrow forms the gap out of which the ends of the branchial arches protrude. In the trunk it is a mere shallow furrow, dividing the dorsal part of each lateral half of the muscular mass from the ventral portion of such half. In the trunk this linear division is situated above the middle (vertically) of the side of the body. In the tail it is situated at about the middle. Each dorsal portion of the lateral muscular mass (i. e. the part z*-4MrB jB.sif; Superficial muscles of right side of head and of anterior part of trunk. D. 1. Digastric. E. S. Erector spina?. L. A. Levator arcuum. L. D. Latissimus dorsi. M. Masseter. M. H. 2. Mylo-hyoideus posterior. P. S. Deltoid. T. Temporalis. T. Trapezius. |