Alanbeuella corrugata

Alanbeuella corrugata (gaudy frog shell) is a species of sea snail, a marine gastropod mollusk in the family Bursidae, the frog shells.

[1] The subspecies Alanbeuella corrugata lineata Nowell-Usticke, 1959 has become a synonym of Bursa granularis (Röding, 1798), itself a synonym of Dulcerana granularis (Röding, 1798) This marine species occurs in the Atlantic Ocean off West Africa, the Canary Islands, Cape Verdes and Brazil; in the Caribbean Sea, the Gulf of Mexico and the Lesser Antilles.

[2] (Described as Ranella pustulosa Reeve, 1844) The shell is ovate, somewhat depressed, and ponderous, with a chestnut color.

The whorls are encircled by two or three rows of large, livid chestnut-colored pimples.

The outer lip is very flatly fimbriated, sinuated at the upper part, and is brown, radiated with whitish grooves.

Apertural view of Bursa corrugata (Perry, 1811) with operculum .