Duthiea setchellii Manza, 1937a: 48 (type locality: Blauwklip, near mouth of Groote River [Keurbooms River], Knysna District, Cape Province, South Africa).—Stephenson, 1939: 534.— Kylin, 1956: 211.
Duthiophycus setchellii (Manza) Tandy, 1938: 115.—Stephenson, 1947: 301.— Seagrief, 1967: 140, pl. [61].— Simons, 1969: 253, fig. (s.n.).— Joubert & Hanekom, 1980: appendices 1, 3.
Arthrocardia duthieae Johansen, 1969: 58, figs. 28b,c (`duthiae').—Seagrief, 1988: 37, 50, fig. 5:7.— R. Anderson & Stegenga, 1989: 302, 304, 305.— Farrell, Critchley, & Aken, 1993: 152.
INDIAN OCEAN DISTRIBUTION: South Africa.
Note: In transferring Duthiea setchellii to Arthrocardia, Johansen was obligated to propose a new epithet because of the prior existence of A. setchellii Manza (1937b: 570; type locality: Port Nolloth, Atlantic coast of South Africa), a species not reported from the Indian Ocean.