Courtly procedure. Phrynopsoma m'celi at the beginning of the courtship, the courting animal approaches the receptive animal (♀) and proceeds with a series of bobbing movements. The bobbing movements of the P. m'celi are of two types; 1) The animal is raised well off the surface of the sand by a severe "bowing" of all four legs. The bobbing is done with flexion at the "elbow" joints; 2) The animal holds the head quite high and the pelvic girdle high off the surface while while the posterior portion of the body remains on the surface. In the courtship "bobs" they are more often of the first type - with the underside of the body showing. These are the introductory types of bobs. There is one more type of "bob" which is used only after the preliminary bobs have been executed. This is definitely a courtship procedure. This bob is usually done first by the animal that is being approached, the ♀. The animal hugs close to the surface and is "walking in place", using lateral, swimming strokes but not moving at a walking pace. While this "walking in place" there are violent quick jerky movements of the head and body. During the action the counter will repeat the same type of "bob", usually staying behind and slightly to one side of the animal being courted.