126 PALAEONTOLOGY OF ONTARIO. 



memoirs, Mi\ Billings enumerates one hundred and fourteen species 

 as known to him as occurring in the Devonian Formation of Ontario, 

 and describes one hundred and four of these, a large number being 

 new to science. 



Of the forms described by Mr. Billings a considerable number 

 have not come under my notice, owing, no doubt, to my researches 

 ha^dng been confined to a comparatively limited area. As the result, 

 however, of my researches, I have now to record one hundred and 

 sixty species of fossils from the Devonian Bocks of Canada, of which 

 forty-nine species appear to be altogether new, and about twenty-six 

 additional species are now first described from Canadian specimens. 

 I am, therefore, enabled to add seventy -five species to the list of the 

 Devonian fossils of Ontario ; though, from the condition of the 

 literature appertaining to. this subject, it is possible that some of the 

 forms which I have described as new may really be identical with 

 previously recorded species. There is also a number of forms which 

 the matei-ials in my hands do not permit me to identify at present, 

 hut which I hope to be able to determine by the aid of future 

 investigations. 



The following tables show more precisely the nature of the fossils 

 which have come under my notice :— (In all the tabular lists the 

 letter C mdicates that the species occurs in the Corniferous Lime- 

 stone, whilst H indicates its occurrence in the Hamilton Formation). 



I. PROTOZOA. 

 The remains of Protozoa in the Corniferous Limestone, though not 

 of a very varied nature, are* far from uncommon, and constitute quite 

 a marked feature in the Lower Devonian fauna. With the exception 

 of a species of Astrceos2Jongia, and one or two undetermined forms, 

 they belong entirely to the enigmatical genus Stromatopora, or to a 

 genus so closely- allied to this as to render any separation at present 

 unadvisable. They may, with the greatest probability, be regarded 

 ;as belonging to the S'pongida, though the more typical forms of 

 .Stromatopora have not as yet been shown to possess some of the more 

 important characters of S^aonge-structui-e. Of the five species of 

 .Stromatopora which occur in the Corniferous Limestone, one is found 

 in the Hamilton Formation, and all except >S'. concentrica, Goldfuss, 

 appear to be new. The single species of Astrceosj)ongia is only known 

 by its spicules, and it is probably identical with A. Hamiltonensis, 

 Meek and Worthen. 



