(Packard). Bonet's use of the name takes priority over that of Carpenter, and I propose the new name Propesinella for Parasinella Carpenter (Bull. B.P. Bishop Mus. 113, p. 138) of which the Genotype is: Propesinella (Parasinella) adamsoni (Carpenter).

The genera Ptenura Templeton, 1842; and SEIRA Lubbock, 1869.

Considerable confusion appears to have arisen amongst workers on the Collembola regarding the true identities of these two genera. The genus Ptenura was erected in 1842 by Templeton for several species previously included in the genus Podura. Templeton included in Ptenura his species nitida, nigromaculata and albocincta together with P. grisea Fabr. The genus Seira (often mis-spelt Sira by later authors) was erected by Lubbock in 1869 for the species Degeeria domestica of Nicolet and a new species, S. buskii. Later Lubbock added a third species, S. nigromaculata, and it was this species that Börner confused with P. nigromaculata of Templeton when he stated that Seira was a synonym of Ptenura (Das System der Collembolen, Mitt. Naturf. Mus., Hamburg, 23, p. 157). The species P. nigromaculata Templeton and S. nigromaculata Lubbock are not the same thing. Börner could not have studied Templeton's description of P. nigromaculata very closely or he would not have made this statement. Börner's error herein was first pointed out by Axelson (Die Apterygotenfauna Finlands, 1907–12, p. 215), but this appears to have been overlooked by subsequent authors. From a study of his description and figures of the species P. nigromaculata Temp., it seems almost certain that Templeton had before him, when he made this description, a species of what is now known as Mydonius. This is further borne out by the fact that Lubbock, in his monograph on the Order (Ray Society, 1873), placed P. nigromaculata Temp, in the genus Degeeria as a synonym of D. annulata Fabr. This issue is, however, further complicated by the fact that Templeton did not designate as the type of the genus Ptenura any particular species of the four he named. Of the other three species named by Templeton, albocincta is also probably a Mydonius, grisea an Isotoma and nitida belongs to the genus Heteromurus (Templetonia of Lubbock). The only possible way of fixing a type for the genus Ptenura is to take the first species mentioned in order of page priority, which, in this case, happens to be the species P. nitida. Accordingly the genus Heteromurus Wankel becomes a synonym of Ptenura Templeton, 1842, and the Genotype of the genus Ptenura must be Ptenura nitida Temp.

Turning to the genus Seira Lubbock, this was read before the Linnean Society of London in 1869, but it did not appear in print until the Transactions of the Society for that year were published in 1871. Here, on page 277, in his opening remarks, Lubbock expressly states that Nicolet's species Degeeria domestica forms the type of his new genus Seira: to quote—-“In placing on record the existence of Nicolet's Degeeria domestica as a British species…. I cannot regard it as belonging to the genus Degeeria, but rather as constituting the type of a separate genus of much interest as …” On page 279 of the same work the genus Seira is described and includes Seira domestica Nicolet and Seira buskii n.sp. In the year 1893 Schött split tip the