472 CARBONIFEROUS TRILOBITES OF AUSTRALIA, 



diminishing gradually in width and height posteriorly, and end- 

 ing short of the margin inconspicuously with about half its 

 anterior width, rings apparently eleven; ridges not prominent, 

 furrows also faint, some of the anterior ones have centrally a 

 backward trend. Axial furrows linear. Side-lobes convex, con- 

 sisting apparently of nine pairs of segments (eight only are 

 visible on the best available specimen), front pair faceted, ridges 

 and furrows fairly distinct, and having successivelv onlv a 

 moderate backward trend. 



Obs. — This trilobite belongs to the ty^pe oi Phillipsia which 

 had the glabella narrower in front than posteriorly, which seems 

 a common characteristic among the Australian members of the 

 genus, and, in this respect, shows a closer relationship to the 

 typical genus of the Proetidse, than do the Phillipsiie of Europe, 

 and, perhaps also, America. A singular feature in the present 

 species is the form of the hypostome assumed to belong to it. 

 None similar to it has come under my notice. The one nearest 

 to it is one figured by Dr. H. Woodward* with other illus- 

 trations of Phillipsia eichivaJdi, but evidently not belonging to 

 that species. 'J he straightness of the anterior branches of the 

 facial sutures, and their mild outward divergence as tiiey reach 

 the frontal limb, are striking features of the species. A study 

 of the description and illustrations of the species will render its 

 separation from other Australian Phillipsise simple. In contour, 

 the glabella is not unlike what that of the glabella placed with 

 P. woodtvardi (PI. xlix., fig. 7) would be, were it not so convex; 

 but, in the former, the glabella is longer than it is wide across 

 the basal glabellar lobes; in the latter, these dimensions are 

 equal. No foreign species has come under my notice witli which 

 it seems necessary to compare it. 



Loc. and Hor. — Trilobite Ridge, Mount Morgan, Queensland. 

 Carboniferous (Lower'?). 



Phillipsia connollii, sp.nov. 

 (PI. li., figs.4-7). 

 Phillipsia grandis Eth. fil. (MS.). 

 Only an incomplete pygidium known. 



* Mon. Brit. Carb. Trilobites, 1883-4, PI. iv., fig. 7. 



