Anatomy of the neck and shoulder region of a rabbit. The muscles in blue are derived from the cucullaris and the muscles in green are from the hypobranchial group. Please note that although dsc-i, musculus dorsoscapularis inferior, is also considered to be part of the cucullaris group, there is currently no description of its development (modified from Streissler, 1900). clm, cleidomastoideus; cloc, cleidooccipitalis; dsc-s, dorsoscapularis superior; sh, tendon; stms, sternomastoideus superficialis; sth, sternohyoideus; stth, sternothyroideus.