218 THE CANADIAN NATURALIST. [May 



an open texture. Following the higher land of the shore eastward 

 along a marsh for a few rods, we find it making a bend southward 

 once more along a low bluff of the same limestone, and here, as 

 well as at the first named exposure of this limestone, beautiful 

 specimens of its characteristic fossils may be obtained in great 

 quantity. The bed is so badly exposed that its thickness cannot 

 be determined. It has a slight southward dip. 



This bed, which I shall call the Windsor Limestone, has 

 afforded me a large number of very interesting species, among 

 which the following may be named as the most characteristic : — 



Of Radiates, a few crinoid joints, very minute, have been 

 detected, but they are by no means common. A Stenopora 

 {Cerio'pora spongites of Acadian Geology) is exceedingly 

 common, and very characteristic of this bed. The fauna of this 

 bed is not rich in Articulates, but it has afforded a Leperditia, a 

 Serpula (?), and part of the cephalo-thorax of another crustacean 

 (a Decapod?), which is in the hands of Dr. Dawson and Mr. 

 Billings for study.* 



It is in Mollusks that this bed is especially rich, and of these 

 the following may be named : — 



Bryozoans. — A species of Fenestella, different from the 

 species occuring elsewhere ; very rare. 



Brachio-PODS. — Rliynchonella Evangelina, nobf, very common. 

 This has the characteristic oral supports of Rhynconella, which 

 are easily examined, a large proportion of the specimens being 

 hollow. A small Productus of the Cora type is very abundant. 

 It is very different from the other Producti of Nova Scotia, and 

 it differs from P. Lyelli DeVerneuil, in being constantly smaller, 

 more globose, and wanting in the large marginal prolongations. 

 A Terebratula {T. saccuhis Mart.) is a common fossil in this 

 bed. I have examined large numbers of specimens of this form, 

 and have compared them, not only with the T. saccuhis of 

 Davidson's paper, from the overlying bed, but also with specimens 

 of that species from de Koninck's collections in the Museum of 



* The specimen is too imperfect for determination. — J. W. D. 



t This is probably the shell which Davidson has referred to in his 

 paper on Acadian Carboniferous Brachiopods as Eh. pu gnus, but it bears 

 a strikingresemblance to the form which he has figured as CamarojphoHa 

 globulina ? This is certainly a Rhynconella, tor it has the characteristic 

 oral supports of the genus. It is quite distinct from Eh. Pug mis. 



