Pagurus Fabricius, 1775

McLaughlin, P. A., 2003, Illustrated keys to families and genera of the superfamily Paguroidea (Crustacea: Decapoda: Anomura), with diagnoses of genera of Paguridae, Memoirs of Museum Victoria 60 (1), pp. 111-144 : 125

Pagurus Fabricius, 1775

Diagnosis. Gills biserial, 11 pairs. Rostrum variable. Ocular acicles simple, bifid or multispinous. Crista dentata with 1 or more accessory teeth. Chelipeds generally very unequal, right usually appreciably larger. Sternite of somite XII (thoracomere 6, pereopods 3) with variably-shaped anterior lobe. Pereopod 4 usually semichelate; propodal rasp with 1 to several rows of corneous scales; with or without preungual process. Male usually without, rarely with slight papilla protruded from gonopore on one or both coxae of pereopod 5; with no paired, modified pleopods, usually with unpaired pleopods 2–5 or 3–5, rarely without unpaired pleopods. Female usually with paired, rarely with single left gonopore on coxa(e) of pereopods 3; without paired pleopod 1, usually with unpaired pleopods 2–5, rarely 2–4. Abdomen usually spirally twisted, occasionally straight. Uropods asymmetrical, infrequently symmetrical. Telson with terminal margins rounded, straight or oblique, usually with median cleft. Type species: Cancer bernhardus Linnaeus, 1758 [as defined by lectotype selection by Forest and Holthuis (1955: 312): specimen figured by Swammerdam (1737: pl. 2 fig. 1)]