on 



mi 



] 58 Frederick Chapman : 



Gyphaspis lilydalensis, sp. no v. 



Cyphaspis yassensis, Eth. fil. and Mitch. (Also N.S.W.). 



Calymene angustior, sp. nov. 



Calymene cf. blumenbachii, Brongn. (Also Brit. Ids., c 



tinent of Europe, N. America and N.S.W.). 

 Gheirurus sternbergi, Boeck sp. (Also England and c 



tinent of Europe). 

 Phacops crossleii, Eth. til. and Mitch. (Also N.S.W.). 

 Phacops serratus, Foerste. (Also N.S.W.). 



DESCRIPTION OF THE FOSSILS. 



Trilobita. — Order Opisthopakia. 



Fain. Goldiidae, Raymond (Bronteidae, Angelin). 



Genus Gold i US, De Koninck. 1 

 Goldius greenii, sp. nov. (Plate XIV., Figs. 1, 2). 



Description of Uolotype. — Form short, broadly ovate. Cephalon 

 short, arcuate. Glabella unusually small at the base, expanded in 

 front; only the middle furrow is well marked, the anterior and 

 posterior being shallow and indistinct. Anterior margin of gla- 

 bella sulcated, with a narrow and fairly deep furrow, the surface of 

 which is ornamented by a faint undulate striation more or less 

 parallel with the border. Neck-ring distinct. Palpebral lobes 

 rugosely ornamented. 



Thorax with ten slender segments, the distal extremities of which 

 appear to be free; their surface relieved with fine, strongly curved 

 or wavy transverse striae. Axal furrows of thorax practically 

 parallel and deeply incised. 



Pygidium moderately large, semi-circular; with seven radial 

 ribs or coalesced segments, and one caudal which is bifurcated for 

 more than half its length. Pygidial axis small, roundly angular 

 at the distal apex; the central ridge divided by seven transverse 

 furrows, the segments convex. Pygidial margin entire. General 

 surface of the pygidium convex proximally, gradually becoming 

 depressed and concave towards the posterior margin. Surface of 

 radiating pygidial ribs ornamented by thin raised wrinklings <>r 



1 The well-known genus-name Bronteus has unfortunately to give place, according to priority 

 ruling, to De Koninck's leas known name, Goldius. The position may he thus stated. In 1833 

 <:<.Ht„ss named this generic type, Brontes, but the name was already occupied for a genus of col- 

 eoptera by Fabricius (1801), whilst Montfort had similarly named a genus of mollu.ica (1810). See- 

 ing this, Goldfusa in 188! (cl Barrande, Syst. Sil. Boheme, vol. i„ p. S30) changed the name to 

 Brontetts, but the genus had in the meantime been renamed (lulditix by De Koninck, in 1841. 



