One of the smallest scyphomedusae. Appearing mostly brown, thimbled-shaped, 10-20 mm; a few short, almost invisible, tentacles around margin; active, bell pulsating rapidly. Bell tiny, stiff-sided; top nearly flat, with coronal groove immediately below; sides straight, with 16 vertical flutings (elongate pedalia); no exumbrellar warts. Marginal lappets very short, 16; tentacles minute, 8, adradial, only ca. 1.5 times as long as lappets. Manubrium extending to 2/3 of bell height, 4-sided, mouth with 4 large recurved lips. From floor of stomach pouches 48 dark warts project down slightly into subumbrella, arranged in outer ring of 32 and two concentric inner rings of 8. Gonads elongate, slightly crescentic. 
Coloration: colorful in brownish patches. Gonads, subumbrellar warts, and irregularly polygonal areas in gasrtic pouches brown; 8 rows of dark brown spots along sides of manubrium; rest colorless, transparent.