Shell description. - The shell is triangular ovate, thin, fragile, and translucent white in colour. The shell surface is smooth and covered with 13 to 16 wide, rounded, concentric ridges separated by regular interstices of equal width. The anterior dorsal edge is almost straight and terminates into the large rounded anterior margin. The posterior dorsal edge is straight, and the posterior end is either truncated or pointed. The ventral margin is curved. The umbones are placed at the midline. The lunule and escutcheon are weakly defined. The shell interior is white, smooth and glossy, and the exterior sculpture can be seen through the shell. The pallial sinus is rounded and shallow, about twice as high as it is deep and non confluent with the pallial line. There is one long posterior and anterior lateral tooth in each valve.
Distribution. - This species was reported from the intertidal of Titik, on the east coast of Peninsula Malaysia by Morris & Purchon (1981). It is widely distributed throughout the Indo-West Pacific region, and has been reported from Thailand (Lynge, 1909; Robba et al., 2002), China (Qi, 2005), Japan (Kira, 1965, Okutani, 2000), Siberia (Kira, 1965) and Australia (Lamprell & Healy, 1998).

Remarks. - A single specimen deposited in the ZRC identified as Standella plicatilis (Reeve) (ZRC. 1975.7.8.15) was found to be Raeta pulchella. The former can be differentiated by being "covered with a brownish epidermis", "impressed in the middle", and "finely keeled and truncated" at the posterior (Reeve, 1854). Disjointed valves of Raeta pulchella were commonly found scattered along the beach from the high tide line to the intertidal regions. Living specimens were not observed during this survey.