Pacific Ocean, with a reappraisal of the subfamily Pinnotherinae de Haan, 1833 (Crustacea: Brachyura: Pinnotheridae) Author Campos, Ernesto text Zootaxa 2009 2022 29 44 journal article 10.5281/zenodo.186086 34491f5d-e23b-40d7-9d4c-41714503582e 1175-5326 186086 Enigmatheres new genus ( Fig. 1 A–E) Type species Fabia canfieldi Rathbun, 1918 , by present designation and monotypy. Diagnosis . MXP3 with ischium and merus indistinguishably fused, inner and outer margin gently curved, lacking obtuse angle; carpus larger than conical propodus; small, narrow dactylus inserted on middle third of medioventral margin of propodus. Relative length of WL 2> 3> 1> 4; WL2 asymmetrical, right one third longer than left; dactyli short, slender and conical, slightly curved up to hooked, hard tip, except right dactylus of WL2 that is longer than other dactili and straight to the tip. Etymology . From the Latin enigma (= mystery) to recognize that knowledge on the distribution and host species are still incomplete after more than nine decades since the discovery of the type species. Gender feminine.