(L. Agassiz, 1862)
With 32 marginal tentacles. Umbrella 10 mm wide, a little broader than high, mesoglea thick at apex, peduncle 1/2 of umbrella diameter, slender, tapering; manubrium short; lips slightly fimbriated; 4 gonads extending from near manubrium along peduncle and somewhat out on subumbrella; marginal tentacles with lateral cirri; about 96 marginal warts with lateral cirri; 8 statocysts.