ADDENDA ET CORRIGENDA.
T he following Diatomaceous earths referred to in the present volume,
are to be added to the list given in Vol. i. p. 5 :—
M u l l D e p o s i t . Described by Dr. Gregory in the Transactions of the Microscopical
Society for 1853 ; and in the Quarterly Journal of Microscopical
Science, vol. ii. 1854.
N e w b i e D e p o s i t . Described by Professor Darkness in the Edinburgh
New Philosophical Journal, July 1855.
Page 12, add to the description of Himantidium pectinale var. ß . Frustules with internal
cells. Blarney, Co. Cork, March 1856.
12, line 8 from bottom, for undidatum read undulata.
28, line 2, fo r never read ra re ly ; authentic specimens of Achnanthes Capensis supplied
by Dr. Arnott, and which are identical with my A. irmipes, have stipes
occasionally longer than the frustules.
43, insert a reference to Plate XLII. 315, for Grammatophora serpentina.
66, to the habitat of Mastoffloia Grevillii add, Gill Banks near Ulverstone, March
1856, Miss E. Hodgson.
In Plate LXI., last line,ybr maculatum read macilenta.