The Phyllocarida, from North Wales, referred to in the lastReport (for 1892, p. 299) as having been lent by Mr. G. J.Williams, F.G.S., of Ffestiniog, have been duly examined, and several described and figured, together with some other specimens, in the GEOLOGICAL MAGAZINE for May, 1893, pp. 198–203, Plate X., by T. R. Jones and H. Woodward. These comprise Peltocaris Salteriana, sp. nov. (Fig. 1), Dipterocaris Etheridgei, J. and W., 1884 (Fig. 3), Aptychopsis Williamsii, sp. nov. (Fig. 7), Ceratiocaris insperata, Salter, 1866 (Figs. 8 and 9); besides a fragment? (Fig. 6), an undetermined specimen (Cut, p. 203), a Conularia (Fig. 2), and two Mytiloid shells (Figs. 4 and 5).