A. Ventral view of head of "Prosopodesmus crater" sp. n., paratype, ANIC 64–000212, showing 12 lobes on anterior edge of collum, antennae retracted below edges of collum and ring 2 tergite, and textured frons with smooth clypeus. B. Ventral view of telson of "Prosopodesmus monteithi" sp. n., QM S91632, showing 5+5 lobe pattern on edge of preanal ring and apical epiproct.