Family: Test rigid, chitinoid, often areolar, smooth; pseudostome ventral, round
(Illustrated Guide, 1985).
Genus: Test variable, chitinoid; binucleate (Illustrated Guide, 1985).
Group [Vulgaroides]:
Test hemispherical; height 1/2 ~ 4/5 diam.; lacks external shelf or rim.
Species: 70-120 μm diam.,
50-75 μm high;
test yellow, brwon to black with age; pseudostome round, invaginated;
dorsal surface dimpled (Illustrated Guide, 1985).
