Colpomenia sinuosa (Mertens ex Roth) Derbès & Solier forma expansa Saunders, 1898: 164, pl. XXXII: figs. 4–6 (type locality: Santa Catalina Island, California, U.S.A.).—Salim, 1965: 195 (`forma expansa Setchell & Gardner').
INDIAN OCEAN DISTRIBUTION: Pakistan.
Note: Salim probably intended to refer to forma expansissima Setchell & Gardner (1924a: 726; type locality: Bahía San Francisquito, Baja California, Mexico), which Dawson (1944: 233) referred to Colpomenia sinuosa forma tuberculata (Saunders) Setchell & Gardner (C. tuberculata Saunders in this catalogue).