456 ' Canadia7i Record of Science. 



Size. Length of a valve 2inira., width Ifmm., depth 

 |mm. 



Beadoria rug-ULOSA, pi. II., figs. 3 a to d. 



Bradoria rugulosa, n. sp. Nat. Hist. Soc. N. B. 

 Bull. iv. p. 205. pi. iii, figs. 3 a to d. 



"A suborbicular species of which only the right valve is 

 known. Tubercle rather prominent, some distance below 

 the anterior end of the cardinal line ; this line is nearly 

 straight and about half of the length of the valve. There 

 is a faint furrow behind the tubercle. A narrow obscure 

 marginal rim appears at the back of the valve. 



Sculpture. The lower slope and the posterior half of 

 the valve are covered with anastomosing ridges, concen- 

 tric to the upper front part of the valve ; toward the top 

 and front of the valve these ridges become obscure aad 

 the surface of the valve is granulated. 



Size Length 2f mm., width" 2| mm., depth less than 

 ^ mm. 



Horizon and loccdity. In assise E. 3. e., Upper Etche- 

 minian Fauna, Dugald Brook, Escasonie, Cape Breton 

 Eare. 



" This little species is easily distinguished from others 

 of the genus by it orbicular form and rugulose surface 

 which is like that of certain trilobites.'-' 



Mutation. ■ 



A small right valve of the form of this is found in As- 

 sise E. 1 c. Lower Etcheminian, at Dugald Brook. The 

 punctation is fine and distinct, and the rugulose surface 

 is seen only near the margin of the valve. 



Bradoria ? ornata, n. sp. PI. II, figs. 4 a to c. 



The valves in this species are rather flat and are rounded 

 to the hinge and lower margin, but not much to the ends- 



