504 SILURIAN TRILOBITES OP N^EAV SOUTH WALES, vi., 



ACANTHOPYGE AUSTRALIS McCov, Sp. 



Lichax nusf.rnlis McCoy, Geol. Survey Vict., Dec. iii., 1876, 

 p. 18, Pl.xxii., fig.ll. 



06s.— McCoy pointed out the near relation of this, C. ho.nerl 

 Barr., a Bohemian species. 



Loc. mid Hot. — Junction of Woori-Yallock Creek witli Yarra 

 River, Victoria. Upper Silurian (National Museum, Mel- 

 bourne). 



Section Corydocephalus Corda. 1847. 

 (^Prod. Mon. Bohmischen TriJobiten, 1847, p. 139). 

 Two highl}' segmental lobes on each side of the glabella. 



CORYDX)CEPHALUS PALMATA var. SINUATA Ratte. 



Licltas siiiitata Ratte, Proc. Linn. Soc. N. S. Wales, i. (2),Pt. 

 iv., p.l065, 1887, PI. XV., fig. 15. Lichan pabntUa var. sitiuata 

 Ratte, loc. cit., ii. (2), Pt. i., p. 95, PI. i., fig 6. 



Obs. — The name given by Mr. Ratte was founded on a pygidium 

 figured but hardly described. He contented himself with call- 

 ing attention to its resemblance to the pygidium of Lichas 

 fiihuata Barr., in consequence of the existence of "deep sinuses 

 situated at the posterior angles of the four lateral i-ibs of the 

 pygidium.' Lichas palmata Barr., clearly falls within the Sec- 

 tion Corydocephalds Corda, but until the remainder of Rattes 

 trilobite is discovered, the reference of the pygidium in question 

 to this section must be regarded as purely provisional. At the 

 same time, it is of considerable interest to us, being one of the 

 few trilobites from any of our Cave limestones. 



De Koiiincks ill-preserved Lichas horn Rock Flat Creek* may 

 belong here. 



L.oc. and //o/'. —Wellington Caves, N. S. Wales. (?)Upper 

 Silurian (Australian Museum). 



APPENDIX. 

 Genus Tri NUCLEUS Lhud, 1699. 

 (Lith. Brit. I(;hnographia, 1699, p.52). 

 Obs. —^^ At Burragood,'' said Clarke, " the genera of Trilobites 



De Koninck, Foss. Pal. Nouv. Galles du Sud, Pt. i., 1876, p.o't 



