Type species. Eranno bifrons Kinberg, 1865
Diagnosis. Prostomium without antennae, without eyes; notopodia slightly developed; without branchiae; simple multidentate hooded hooks present; pygidium with anal cirri; maxillary apparatus with five pairs of maxillae, carriers as long as MI, joined to entire base of MI; MI forceps-like without internal accessory teeth, with attachment lamella; MII shorter than MI, with ligament, attachment lamella wide along 2 / 3 of the posterior lateral edge; connecting plates narrow strongly sclerotized; MIII completely pigmented, attachment lamella wide along entire lateral edge; MIV completely pigmented, attachment lamella wide; MV partially fused to MIV and reduced to attachment lamella only. Mandible fused up to 3 / 4 of its length.