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Canadian Record of Science. 



mitted to Prof. Kupert Jones. It seems very rare, and 

 may be merely a depauperated variety or immature state 

 of the last mentioned. 



Fig. 4, X 5. 



4. Esther ia Daivsoni, Jones^ (Fig. 4.) The specimen 

 described by Prof. Jones is from Horton but the same 

 species has more recently been collected by Mr. Fletcher, 

 of the Geological Survey, at Five Islands, and was identi- 

 fied by Prof. Jones on being submitted to him. It has 

 also been found in Scotland. I have either the young of 

 this species or a similar one of smaller size from the 

 East Eiver of Pictou. 



Fig. 5, X 5. 



5. Zeaia Leidyi, Jones (Lea Sp.), var. Scdteriana, Jones 

 (Fig. 5.) This species, unique in my collections, from the 

 Lower Carboniferous of the Strait of Canseau, is widely 

 distributed in the Carboniferous on both sides of the 

 Atlantic. It was first discovered in Pennsylvania, but 

 a second species or variety of larger size has been found in 

 Illinois. (Z. tricarinata, Meek & Worthen.) It seems to 

 be rare in Xova Scotia, which is unfortunate, as it is so 



1 Geol. Mag., 1870, p. 220, PI. IX., Fig. 15. 



