Retilaskeya bicolor is a species of sea snail, a gastropod in the family Newtoniellidae, which is known from the Caribbean Sea and the Gulf of Mexico. It was described by C. B. Adams, in 1845.[1]
The maximum recorded shell length is 20 mm.[2]
The minimum recorded depth for this species is 0 m and the maximum recorded depth is 65 m.[2]