194 Proceedings of the Royal Society of Victoria. 



fourteen and a quarter inches in length. Those interested in the 

 proportions of these gigantic Trilobites will find full data in an 

 interesting paper recently published by Mr. J. M. Clarke,* 

 enumerating many others than those here given, not the least 

 interesting being the gigantic Tretaspis grandis, Hallf, which 

 is believed to have attained two feet in length. Mr. Clarke 

 remarks on this — " A size unsui'passed and unequalled by any 

 other known Trilobite," but if Mr. Bayan's estimate of Lichas 

 Heberti, Rouault, be correct, we have there a larger one. 



In conclusion, believing as I do, that the fossil represents the 

 pygidial remains of a large Trilobite related to, if not identical 

 with the genus Bronteus, I suggest for it, with the view of 

 future referenoe, the name of Bronteus ? enor?}iis,.\n relation to its 

 size. With regard to its age it is certainly Lower Palaeozoic, but 

 I have not yet seen sufficient of the accompanying fossils to be in 

 a position to express a more definite opinion. 



DESCRIPTION OF PLATE XL 



Fig. \. Bronteus 'i enormts, Eth. fil. Pygidium of the natural 

 size, slightly obliquely distorted. 



Fig. 2. Portion of the surface enlarged. 



» 44th Ann. Eeport New York State Mus. for 1890 [1892], p. 111. 

 t Loc. cit., pi. opp. p. 114. 



