Penial Retractor

Some articles on penial retractor:

Strobilopsidae - Anatomy
... in a long epiphallus and bears a long appendix, with swollen basal and distal divisions, the penial retractor bifurcate, one branch inserted on the epiphallus, the other on ... groups are similar in having a bifurcate penial retractor and a long, tripartite appendix ... Dallas Hanna is right in stating that the penial retractor is a branch of the right ocular band, this is an important difference from any known Orthurethra ...