438 CARBONIFEROUS TRILOBITES OF AUSTRALIA, 



The discovery of the genus Brachymetopus in the Mount 

 Morgan district will be of much assistance in establishing the 

 geological age of that area, and also in correlating its sedimentary 

 rocks with those of other localities. For reasons which will be 

 obvious, the name Phillij^sia dubia has been discarded by me. 



To Messrs. W. S. Dun, Palaeontologist, Department of Mines, 

 Sydney, B. Dunstan, Chief Government Geologist, Brisbane, and 

 H. A. Longman, Director of the Queensland Museum, Brisbane, 

 I am indebted for specimens placed with me for inspection and 

 description, and for which I tender to them my thanks. To Mr. 

 R. Etheridge, J. P., Director and Curator of the Australian 

 Museum, and to Mr. Dun, my thanks are tendered for affording 

 me access to literature. I am very grateful to General A. W. 

 Vogdes, of San Diego, U.S. A, Bibliographist and Authorit}^ on 

 Palaeozoic Crustacea, for supplying me with notes on the classifi- 

 cation, and a list of the Carboniferous Trilobites described to 

 date. Lastly, I wish to express my thanks to Mr. F. K. Cowper 

 Heed, M.A., F.G.S., Acting Keeper of the Sedgwick Museum, 

 Cambridge, England, for supplying me with a number of liis 

 valuable papers, from which I have received much help. 



Bibliography of Australian Carboniferous Trilobites. 



(I). — 1847. Prof. McCoy (^.im. Mag. Nat. Hist., xx., p.231, 

 PI. xii., fig. 1) described Brachymetopus strzehckii and referred to 

 the occurrence of the genus Fhil/ipsia in Australian Carbonifer- 

 ous rocks. 



(2). — 1872. R. Etheridge, Senr., (Quart. Journ. Geol. Soc, 

 Vol. xxviii., p 338, PL xviii., fig.7) described Griffithides dubins, 

 which, from the description, would appear to be an abnormal 

 species. 



(3). — 1877. De Koninck (Foss. Pal. Nouv. Galles du Sud, 

 Pt. 3, p. 348, etc., PI. 24, figs. 8, 9, 9a, 10, 10a, 106, and 10c) de- 

 scribed and figured Griffithides (PhiUipsia) elchwaldi Fischer, 

 Phillipsia (Griffithides) seminifera Phillips, and Brachymetopus 

 strzeleckii McCoy. 



(4)._1892. R. Etheridge, Junr., (Geo), and Pal. Queensland 

 and New Guinea, pp. 214-216, PI. xxi., figs.U-H; PI. viii., figs. 



