448 TWO NEW TEILOBITES FROM BOWNING, 



of comparison and contrast photos of the above two Bowning 

 species will be found on the plates illustrating this paper. Other 

 associates are Ceratocephala longispinosa Mitchell, Odontopleura 

 (Acidaspis) jenkinsi, and 0. rattei, and a coral which is thought 

 to be Pleurodictyum megastornum McCoy. The occurrence of 

 the latter fossil, together with many lamellibranchs not yet deter- 

 mined, but which, if not actually Devonian species, are closely 

 allied to them, indicates that it is more than likely that the upper 

 beds of the Bowning stratified rocks will prove to belong to the 

 lower Devonian horizon, although up to the present Mr. Etheridge 

 and myself have considered these beds to be Upper Silurian or 

 passage beds between these two formations. 



Lac. and hor. — Near the railway station, Bowning township. 

 Parish of Bowning, County Harden, N.S.W. Upper Trilobite Bed. 

 Probably Lower Devonian. 



(Note. — In my paper ''The Carboniferous Trilobites of Aus- 

 tralia" (Proc. Linn. Soc, N.S.Wales, xliii., 1918, pp. 437-494, 

 Pis. 40-53), a few omissions and errors occurred. These I wish to 

 have the privilege to correct.) 



Explanation of Plates. 



Plate xliii., fig. 9. — Read — Medial portion of a cephalon much weathered 

 (Coll. Queensland Mus., No. 707). 



Plate xlix , figs. 1, 2, .3, 4, and 6 are photos of wax impressions of casts; 

 fig. 6 is the counterpart of fig. 5. Figs. 3 and 4 are from Malchi Creek, 

 near Rockhampton, Queensland. 



Plate lii., fig. 2 represents specimen F1031 and not F1017 of the Queens- 

 land Geol. Surv. 



Plate liii., fig 9, represents PI. vii., fig. 11, Geol. and Pal. Queensland 

 and New (Guinea. 



Page 405. last line — -for figs. 5-0, read fig,5. 



EXPLANATION OF PLATES. 

 Plate xv. 

 DaJmanites loomesi Mitchell. 

 Fig. 1. — An almost perfect individual, slightly enlarged 

 Fig.2. — A fine pygidium showing about 20 rings in the axis and 14 seg- 

 ments in the pleura, and the absence of connection between the axis 

 and tail spine, etc. The pygidium belonged to an individual that 

 had a length approximately of four and a half inches. (x-J). 

 (Coll. Mitchell). 



