85(1 



SOME ADDITIONAL TRILOBITES FROM NEW SOUTH 



WALES. 



By John Mitchell, late Principal of the Newcastle 

 Technical College and School of Mines, N.S.W. 



(With Plate xlvii.) 



Order OPISTHOPARIA. 



Family ACIDASPIDAE. 



Genus Ceratocephala. 



CERATOCEPHALA PHALAENOCEPHALA,* n.Sp. 



(Plate xlvii., figs. 1-3.) 



Only the headshield known. This is very mildly convex, sub- 

 oblong, much wider anteriorly than posteriorly, much expanded 

 at the anterior angles, thence contracting towards the genal 

 angles rather strongly; tuberculation sparse consisting of small 

 even-sized tubercles arranged in rows on its different parts; 

 anterior and posterior borders parallel; greatest width, 14 mm., 

 length, 6 mm. Glabella — medial lobe very mildly convex and 

 oblong, two pairs of glabellar furrows and lobes present — the 

 second and basal pairs — each pair of the furrows appearing to 

 be continuous and forming an open shallow U-like sulcus; both 

 pairs of lobes are indistinct. The neck furrow is relatively deep 



* With a head like a moth. 



