The specimens remaining in the British Museum (Natural History) described by Theobald (1901a) as Anopheles sinensis Wiedemann 1828 sub-species annularis Van der Wulp 1884, and (1903) as An. Vanus Walker 1859, are shown to consist of five and six different species respectively. Theobald's An. sinensis annularis s. s. is shown to be chiefly An. crawfordi Reid 1953, whilst his annularis var. A, though principally An. nitidus Harrison, Scanlon, and Reid 1973 as suggested by those authors, also includes An. peditaeniatus (Leicester 1908). Theobald's An. vanus includes An. nigerrimus Giles 1900 as well as the five species included under his sinensis annularis s. l.