Agononida
Agononida Baba and de Saint Laurent, 1996: 441 [type species: Agononida incerta Henderson, 1888. Gender: feminine]. – Poore 2004: 229. – Baba 2005: 68. – Baba et al. 2008: 46 (list of species and synonymies). – Baba et al. 2009: 71.
Carapace with distinct transverse striae. Pair of epigastric spines. Cardiac region with transverse ridge elevated, often armed with spine(s). Branchial margin with 3 or 4 spines. Rostrum spiniform, remote from supraocular spines. Lateral limit of orbit rounded. Abdominal somites 2–4 each with 2 elevated transverse ridges, each anterior ridge often armed with spine(s). Telson subdivision incomplete. Cornea dilated. Antennal article 1 with distomesial process strong or moderate. Mxp3 ischium usually thin, cristata dentata not well-developed; merus with strong submedian spine on flexor margin. P1 slender. P2–4 relatively long and slender, dactyli flattened mesiolaterally, flexor margin with row of seta-like movable spines. P5 without toothbrush-like setae. G1 absent; G2 present.