Genus Eryma Meyer, 1840 (Fig. 1 A-C) Eryma Meyer, 1840a: 587. — Oppel 1862: 20. — Zittel 1885: 693. — Van Straelen 1925: 233. — Rathbun 1926: 127. — Secrétan 1964: 61. — Förster 1966: 88. — Glaessner 1969: 455. — Aguirre-Urreta & Ramos 1981: 609. — Secrétan 1984: 516. — Aguirre-Urreta 1989: 513. — Crônier & Courville 2004: 1004. — Feldmann & Titus 2006: 63. — Feldmann & Haggart 2007: 1792. — Hyžný et al. 2015: 375. — Feldmann et al. 2015: 1. Klytia Meyer, 1840b: 19. TYPE SPECIES. — Macrourites modestiformis Schlotheim, 1822, by subsequent designation of Glaessner (1929). EMENDED DIAGNOSIS. — Fusiform intercalated plate; deep cervical groove, joined to dorsal margin and to antennal groove; short gastro-orbital groove originating as a slight median inflexion of cervical groove; postcervical and branchiocardiac grooves subparallel; postcervical groove joined medially to branchiocardiac groove (with a short ventral extension); branchiocardiac groove strongly inclined, joined to hepatic groove; concavo-convex hepatic groove, joined to cervical groove; inferior groove convex posteriorly, joined to hepatic groove; marked ω bulge; cephalic region with two divergent rows of tubercles: orbital row with strong distal spine and antennal row with strong distal antennal spine; chelate P1-P3; P1 chelipeds without prominent spines and with homogeneous ornamentation; P1 propodus dorso-ventrally compressed with narrow inner and outer margins; P1 with narrow dactylar bulge; fingers longer than P1 propodus, equal in length, narrowing gradually to distal extremity; index wider than dactylus. COMMENTS Some species show short P1 fingers such as Eryma modestiforme or E. punctatum Oppel, 1861, and other species show long P1 fingers such as E. bedeltum (Quenstedt, 1857) or E. ventrosum (Meyer, 1840). Following Hyžný et al. (2015), we distinguish two forms chelae. Form I (Fig. 1B) has a short rectangular propodus with straight fingers slightly longer than the propodus; form II (Fig. 1C) has an elongate subrectangular or trapezoidal propodus with long fingers which are usually curved inward.

Published as part of Devillez, Julien, Charbonnier, Sylvain, Hyžný, Matúš & Leroy, Lucien, 2016, Review of the Early Cretaceous erymid lobsters (Crustacea: Decapoda) from the Western Tethys, pp. 515-541 in Geodiversitas 38 (4) on page 518, DOI: 10.5252/g2016n4a4, http://zenodo.org/record/5208463