On the synonymy of Sagitta decipiens Fowler, 1905, and Sagitta neodecipiens Tokioka, 1959, and the validity of Sagitta sibogae Fowler, 1906

The inadequacies of the original descriptions of Sagitta decipiens Fowler, 1905, and S. sibogae Fowler, 1906, have led to confusion concerning these species. Sagitta neodecipiens Tokioka, 1959, is a junior synonym of S. decipiens Fowler, 1905. S. sibogae Fowler, 1906, is the valid name for the species usually incorrectly named S. decipiens (non Fowler, 1905) because of the redescription of Ritter-Zahony (1911). S. philippini Michael, 1919, is a junior synonym of S. sibogae. The two valid species are redescribed from the types, and lectotypes have been designated.