Notes.Entries show the number of stars common to each pair of primary catalogues (e.g., there are 172 entries in the LHα 120-S listing, of which 53 are also in the L63 catalogue). Twenty-five RPs catalogue entries have LHα 120-S matches, but only 23 LHα 120-S entries have RPs entries, because LHα 120-S 24 corresponds to three separate RPs objects; similarly, BE74-383 (HD 269828) matches three separate BAT99 entries. The last two columns give the number of “discovery” entries (e.g., of the 446 entries in the AL catalogue, 372 had not been previously identified by Henize 1956 or by Lindsay 1963), and the number of entries not appearing in any of the other tabulated catalogues. The RPs study is targeted on fainter objects than the 20th-century surveys, giving rise to a large number of new targets, with relatively few recoveries of known, brighter stars. The BE74 total of 624 is one fewer than the number of their catalogue entries because BE74 394 is not marked on their charts, and the counterpart is not reliably identifiable. The RPs total of 576 stars is three fewer than their asserted 579 objects because their Table A.1 has only 578 entries, including one duplicated listing (RPs1822) and one duplicated target (RPs447 = RPs1014). The sum of “First” discoveries (1666) is nine fewer than the total number of metacatalogue entries (1675), because (i) LHα 120-S 24 and BE74-383 are two “firsts” that translate to six objects; and (ii) the metacatalogue includes five WR stars not included in the listed primary catalogues.

Reference. LHα 120-S = Henize (1956); L63 = Lindsay (1963); AL = Andrews & Lindsay (1964); BE74 = Bohannan & Epps (1974); BAT99 = Breysacher et al. (1999); RPs = Reid & Parker (2012).