while Clavis (a key) would also stand as distinct. There is no such distinction, however, in the terminations “ger,” “gera,” and “gerum,” and, in the absence of statement as to what meaning was intended by the stem “clav,” anyone who wishes to abide by the rules must admit the equivalence of Clavigera and Claviger. That being the case, Thomson's name is antedated by Agassiz, 1846 (Nomen. Zool. Index Univ.; emend for Clavifer Laporte, 1835), for a beetle; Haldeman, 1842 (Amer. J. Sci., vol. 42, pt. 1, p. 216), for a Gasteropod —the Melania group mentioned by Trechmann—; and Preyssler, 1790 (Verz. Bohm. Ins., p. 68), for another beetle. Rovereto (Atti. Soc. ligust di Sc. natur. e geogr., vol. 10, 1899) has already called attention to the preoccupation in the case of Haldeman's name, and provided the substitute Hemipirena. Hectoria Trechmann must, therefore, be considered as correctly substituted for Clavigera Thomson. Unfortunately, it must itself be also rejected, as Hectoria had been used earlier for a locust by Tepper (T.R.S.S.A., vol. 12, p. 21, 1890). I therefore now supply Hectorina n. n. for Hectoria Trechmann, of which Thomson (Geol. Mag., N.S., Dec. 6, vol. 6, p. 412, 1919) has selected as the genolectotype Hectoria cuneiformis Trechmann, 1918 = Clavigera cuneiformis Thomson, 1913. I apply Hectorina at present as also covering Clavigera bisulcata Thomson, the genolectotype of his Clavigera; should, as he suggests, any subsequent author consider that these are not congeneric, a new genus will be necessary for the latter. Dielasma sacculum var. amygdala (Dana, 1847) (Terebratula):— D. sacculum bensoni n. n. (Amer. Journ. Sci., vol. 2, no. 4, p. 152.) Dun and Benson have included this in their “Census of the Lower Burindi Fauna” (Mem. Geol. Surv. N.S.W., vol. 10, p. 37, 1921), but the combination Terebratula amygdala had been previously used by Catullo, 1846 (Giorn. di Fisica, vol. 2, no. 5, p. 90), so I rename the species as above. Terebratulina cancellata (Kuster, 1843) (Terebratula):— Terebratulina hedleyi n. n. (Conch. Cab., vol. 7, p. 35, as of Koch, MS.) This well-known species (which, though generally referred to Koch, should be credited to Kuster) is recorded from South Australia by Verco (T.R.S.S.A., vol. 34, p. 95, 1910), from Tasmania by May (Check-List Moll. Tas., p. 106, 1921), and from New South Wales by Hedley (Check-List Mar. Moll. N.S.W., p. 113, 1918), but apparently the name must go, as there is a prior Terebratula cancellata Eichwald, 1829 (Zool. Spec., vol. 1, p. 276). It is curious that only this name, and not Koch's, is recorded by Sherborn (Index Anim., 2, pt. 5, p. 1034, 1924). For T. cancellata Kuster I therefore propose Terebratulina hedleyi n. n.