Fkoc. Rot. Soc. Victoria, 22 (N.S.), Pt. II., 1910.] 



Art. X. — New or LUtle-knoiun Victorian Fossils in the 

 Natio nal Musewm. 



Part X. — Some Palaeozoic Worms and Crustacea. 



By FREDERICK CHAPMAN, A.L.S., kc, 



National Museum. 



(With Plates XXVII., XXVIIL, XXIX.). 



[Read 9th September, 1909.] 



Preliminary Remarks. — The present paper relates to a short 

 series of fossils from the Silurian beds in the neighbourhood of 

 Melbourne. The fossils described are the following : — 

 Tr achy derma crassituha, sp. nov. 



„ cf. squamosa, Phillips. 



Turrilepas ornatus, sp. nov. 



„ yeringiae, sp. nov. 



C eratiocaris pinguis, sp. nov. 



„ cf. pardoeana, Jones and Woodward. 



Xiphidiocaris falcata, sp. nov. 

 Hitherto, no remains of Trachyderma seem to have been re- 

 corded from Australia. The genus, however, is well known in 

 the English Ludlow fauna, and has lately been collected from 

 the Silurian of Burma, in beds containing an assemblage of 

 fossils strikingly similar to the Silurian of this State. 



Turrilepas has already been described by Mr. Etheridge, 

 junr., from the Bowning beds of New South Wales, and it is 

 therefore of exceptional interest to find their remains in the 

 Victorian Silurian, where they occur in both the Melbournian 

 and Yeringian series. 



The commonest genus of the " pod-shrimps," C eratiocaris, is 

 a fairly abundant fossil in the mudstones and shales of South 

 Yarra (exposed in the Yarra Improvement Works), but owing 

 to the irregular fracture and soft texture of the rock it is very 



