Based on a firsthand parsing of the original literature, a Zoological Record-style tabulation of all nomenclatural acts regarding species of the order Opiliones is presented for the interval between 1758 and 1804. A total of 52 species was described as new, 14 of which are not Opiliones or remain unrecognizable (nomina dubia), six species have been synonymized (one revalidated), in all resulting in 33 valid species of Opiliones. Four genera were established, although no more than three were used simultaneously. The family Phalangita (Phalangiens) was described and coincides with the modern use of the order Opiliones. Of the current four recognized suborders of Opiliones, three (Cyphophthalmi, Eupnoi and Dyspnoi) were recorded. Laniatores remained unknown. A checklist is given for the order Opiliones up to 1804.