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THE SILURIAN TRIL0BITE8 OF NEW SOUTH WxVLES, 



WITH REFERENCES TO THOSE OF OTHER 



PARTS OF AUSTRALIA. 



By R. Ethekidge, J. P., Junk., Curator of the Australian 



Museum, and John Mitchell, latk Principal of the 



Newcastle Technical College. 



Part V. 

 The ENCRINURID^. 



(Plates liv.-lvii.) 

 i. Introduction. 



It is now some years since the Fourth Part of our joint studies 

 on the Silurian Trilobites of New South Wales appeared. This 

 lapse of time is easily accounted for by the pressure of public 

 duties entailed on both of us. 



The last family described was that of the Odontopleurida'. 

 We now purpose describing the members of the Encrinurid«?. 

 In this family are placed the following limited number of genera, 

 viz. : — 



Mncriuuriis, Emmrich. 

 Cromus, Bai'rande. 

 Cyhele, Loven. 



Diiidymene, Hawle and Corda. 

 Of these, the first is the only genus yet found in Australia 

 with certainty. 



ii. The Genera Eiicrinurus and C ramus. 

 Some authors regard these as synonymous; by others, on the 

 contrary, they are accepted as closely allied but distinct genera. 



Encrinurus was proposed by Emmrich, in 1S45, to include the 

 Trilobites pniictatus of Briinnich, which we presume (we have not 



