Family POECILASMATIDAE Annandale, 1910

Lepadidae Darwin, 1852: 8 (part.). - Pilsbry 1907a: 72 (part.).

Lepadinae . - Gruvel, 1905: 104 (part.).

Poecilasmatinae Annandale, 1910a: 84.

Poecilasmatidae . - Nilsson-Cantell, 1921: 253.

Trilasmatidae Nilsson-Cantell, 1934: 40. - Hiro 1937a: 79. - Krüger 1940: 29.

Diagnosis.

Capitulum with up to five plates, including tergum and scutum; scutum in some species split into two (resulting in seven plates); some or all plates may be degenerate or absent; umbos of terga apical, those of carina and scuta fundamentally basal; peduncle without calcareous scales; maxillule not stepped; cirrus I widely separated and much shorter than posterior cirri; caudal appendages uniarticulate, spinose.

Type genus.

Poecilasma Darwin, 1852: 99.