Genus Pseudaeginella Mayer, 1890

Diagnosis. Head and pereonite 1 partially fused (suture clear). Antenna 1 well developed; flagellum with more than 2 articles. Antenna 2 well developed; no swimming setae; flagellum with 2 articles. Mandible palp 3-articulate, molar present, very small, reduced to a protuberance, sometimes absent, lacinia mobilis plate-liked, setal formula 1-x- 1. Maxilliped well developed; inner plate (basal endite) smaller than outer plate (ischial endite); outer plate (ischial endite) well developed; palp article 3 without distal projection; palp article 4 well developed. Gills present on pereonites 3 and 4. Pereonite 4 clavate appendage absent. Pereonites 6 and 7 separated (not fused). Pereopods 3 and 4 vestigial with 1 article. Pereopods 5–7 well developed, with 6 articles. Pleopods absent. Abdomen with 2 pairs of uropods; very vestigial (unclear), degenerated into setae. Telson (dorsal lobe) present.

Type species. Aeginella tristanensis Stebbing, 1888