Musculus, (from cucullus, a hood,) called also trapezius, arises by a strong round tendon, from the lower part of the protuberance in the middle of the os occipitis behind; and by a thin membranous tendon, which covers part of the splenius and complexus muscles, from the rough curved line that extends from the protuberance towards the mastoid process of the temporal bone; runs down the nape of the neck, where it seems to arise from its fellow, and covers the spinous processes of the superior vertebra; of the neck, but arises from the spinous processes of the two inferior, and all the vertebrae of the back, adhering -tendinous to its fellow the whole length of its origin. It is inserted, fleshy, into the posterior half of the clavicle, tendinous and fleshy into the acromion, and into almost all the spine in the scapula. Its use is to move the scapula, according to the three directions of its fibres: for the upper descending fibres draw it obliquely upwards; the middle transverse straight fibres draw it directly backwards; and the inferior ascending fibres draw it obliquely downwards and backwards. Where it is inseparably united to its fellow in the nape of the neck, it is named ligamentum colli, or nucha. (Innes). It is observed by Douglas, that Galen divides this muscle into two, viz. the superior and the inferior. The first he calls the trapezia; and to the second later anatomists have given the name of cuculla, from whence they are both commonly named cucullares. Its upper part, from the os occipitis to the spinal process of the last vertebrae colli, is inseparably united to its fellow of the other side.