wHiTEAxes.] FOSSILS OF HAMILTON FORMATION OF ONTARIO. 93 



far the greater number were obtained bj' the Eev. Hector Currie 

 (formerly of Widder and now resident at Thedford) and by the Eev. 

 J. M. Cxoodwillie, two zealous and successful collectors of the fo>sils of 

 these townships since 1876, who generously presented a number of 

 their choicest specimens to the ifusemn of the Canadian Survey in 

 1882. 



The object of the present paper is to place upon rec^u'd the names 

 of these and other fossils new to the published lists, with descriptions 

 and tigares of such as appear to be nndescribed, and finally to give 

 as complete a lista> pos-~ible of all the species known up to the present 

 date from the formation in Ontario. 



In the preparation of thi> paper the writer desires to acknowledge 

 his obligations to Mr. Charles Waehsmuth for the identification of three 

 species of crinoids, as well as for valuable critical .suggcstioDs in refer- 

 ence to the crinoids and blastoids generally ; to Professor James Hall 

 for the loan of two of the types each of his Pentreim'tes leda muI P. 

 White! ; and to Professor E. P. Whitfield for the loan of one of the 

 types of Xucleocrinus lucina, Hall, now in the American iluseum of 

 Natural History in Xew York city, and for the comparison of Canadian 

 specimens supposed to be referable to Xucleocrinus elegans, Conrad, and 

 Productella truncata, Hall, with the types of those species in the same 

 institution. 



CCELENTERATA. 



ANTHOZOA. 



(Tetracoralla, Hfeckel : Eugosa, Edwards and Haime.) 



ACERVULARIA PROFUNDA, Hall. 



Acermdaria prvpindii, Hall. 175S. Rep. Gaol. Surv. St. Iowa, vol. I., pt. 2, p. 477, 

 pi. 1, figs. 7 a, b, c. 



Township of Bosanquet, Mr. J. Pettit, 1868 : one fine specimen. 



Dr. Eominger, in his " Eossil Corals of Michigan," (]>. 106) expresses 

 the opinion that A. profunda is only a variety of A. Davidsoni, 

 Edwards and Haime, and that Acervularia itself is synonymous with 

 Cyathaphyllum. 



