314 THE CARBONIFEROUS SYSTEM. 



Actinoceras. — The species represented at the end of this chapter 

 (Fig. 133 a), and which has only recently come under my notice, was 

 collected by Mr D. Fraser on the East River of Pictou. I have 

 named it A. inops. 



Anthracosia. — The only species of this genus known to me in Nova 

 Scotia was omitted inadvertently from its proper place in this chapter. 

 It was found by Mr J. Barnes at Baddeck, Cape Breton, in a brown- 

 ish shale of the Lower Carboniferous, and is figured at the end of 

 the chapter under the name A. Bradorica (Fig. 133 b). 



It is a curious fact that, except a few teeth of fishes, no remains of 

 vertebrate animals have yet been found in the marine limestones which 

 have afforded the above species of invertebrates. This is the more 

 remarkable since remains of fishes are so abundant in the Lower 

 Carboniferous shales, and also in the Coal formation. 



Though I have noticed in the above list about 87 species of ani- 

 mals, I think it probable that many more remain to be discovered ; 

 indeed there are in the collections now in my hands imperfect specimens 

 which indicate the existence of several others. These limestones must 

 continue for some time to afford a rich field to industrious collectors ; 

 and it is much to be desired that those who may engage in this work 

 would place their collections Avhere they may be studied and described, 

 as there is no doubt that many fine specimens from these beds are 

 buried in the cabinets of amateurs, and have been practically lost to 

 science. 



Fig. 133 a. — Actinoceras iiwps, n. sj>. Fig. 133 b. — Anthracosia Bradorica, n. sp. 



