FIGURES 1–9 in Taxonomy of the freshwater crabs of Costa Rica, with a revision of the genus Ptychophallus Smalley, 1964 (Crustacea: Decapoda: Pseudothelphusidae)

FIGURES 1–9. Achlidon agrestis (Rathbun, 1898): 1, left first gonopod (partially damaged), holotype, USNM 19487, mesial view; 2, same data, lateral view of distal part; 3, left first gonopod, NHMW 21827, cephalic view of distal part; 4, same data, apical view of apex; 5, same data, latero-cephalic view. Achlidon puntarenas (Hobbs, 1991): 6, left first gonopod, holotype, USNM 250555, caudo-mesial view; 7, same data, latero-cephalic view of distal part. Ptychophallus cocleensis Pretzmann, 1965: 8, left first gonopod, holotype, USNM 119869, lateral view of distal part; 9, same data, mesial view (dr, disto-caudal ridge; fs, field of apical spines; lp, lateral process; me, mesial process; mp, marginal process; ms, marginal suture). Scale bars = 1 mm.