G8 



PteropoDa. Conularia Trentoneiisis, Hall. 



Gasteropoda. Murcliisonia gracilis, Hall. 

 Cephalopoda. Endoceras proteiforme, Hall. 

 Annelida. Serpulites dissolutus, Billings. 



Crustacea. Encrinurus vigilans, Hall. 



Last summer Messrs. W. R. Billings and H. M. Ami paid special 

 attention to collecting the Monticuliporidi\3 of the Black River and 

 Trenton limestones of the neighborhood of Ottawa, and succeeded in. 

 finding six species that had not previously been recorded as occurring in 

 Canada, and four that are new to science. 

 The six new to Canada are as follows : 



Ptilodictya pavonia, DT)rbigny. 

 Ptilodictya maculata, Ulrich. 

 Stictopora paupera, Ulrich. 

 Monticulipora parasitica, Ulrich. 

 Amplexopora discoidea, Nicholson (Sp.) 

 Heterotiypa solitaria, Ulrich. 

 The four new to science have recently been described by Mr. A. H. 

 Foord, in one of the puV)lications of the " Geological and Natural His- 

 tory Survey of Canada," as Mo7iticulipora BUlingsi, Prasojyora oculata, 

 Batostoma Ottaivaense and Spatio2)ora areolota. 



During the season of 1882, also, Mr. "VV. K, Billings has made the 

 following additions to the Fauna of the Trenton limestone near Ottawa 

 City. 



C^lenterata. Paljeophyllum divaricans, Nicholson. 

 Crinoidea. Glyptocrinus decadactylus, Hall. 



Glyptocrinus parvus, Hall. 

 Heterocrinus subcrassus, Meek & Wortheu. 

 Annelida. Conchicholites fiexuosus. Hall. 



From the Chazy formation at the Hog's Back, Messrs. Billings and 

 Ami have obtained an interesting series of fossils, but these specimens 

 have not yet been studied nor the species identified. 



Mr. E. T. W. Sowter i-eports the discovery of considerable areas of 

 Black Biver limestone, containing well preserved and characteristic 

 fos^iils, between Aylmer and the mountains to the north, also to the N. 

 W. of Aylmer, in a tract of country previously laid down on the maps 

 as exclusively occupied by the Chazy formation. 



