300 



shallow concave groove running round parallel to the edge. The valves 

 are nioderatelj convex. The tubercle is situated at about one-third the 

 length from the anterior extremity, and at one-third the breadth below 

 the hinge line. Surface apparently smooth. 



Length of a large specimen 3 lines ; width 2 lines. 



Resembles L. Canadensis (Jones), but has a more nearly straight 

 ventral margin, and is not so convex. 



Locality and Formation. — L, Point Rich, M. Table Head, Newfound- 

 land ; Quebec group. 



Collector. — J. Richardson. 



Leperditia ventralis. (N. sp.) 



Desci'iption. — Right valve sub-ovate ; dorsal margin straight ; angles 

 obliquely truncated ; ventral margin convex, most projecting a little 

 behind the mid-length ; margin at both extremities compressed ; strongly 

 convex in the lower half, most tumid at the ventral margin, which is so 

 abruptly folded under as to appear carinated. Left valve unknown. 

 Surface apparently smooth. 



Length 4^ lines ; greatest width 3 lines. A single well-preserved 

 right valve was collected, and it Avas associated with imperfect specimens 

 of what is probably the left valve. These latter are more nearly ovate, 

 and less convex than the right valve. 



This species is distinguished by the strongly convex and sub-carinated 

 ventral margin. 



Locality and Formation. — N, Bonne Bay, north-Avest arm, and also 

 at the entrance to the east arm, Newfoundland ; Quebec group. 



Collector. — J. Richardson. 



Beyrichia Atlantica. (N. sp.) 



Description. — Small sub-ovate or reniform, greatest convexity along the 

 median line ; a single shallow depression, extending from the dorsal 

 margin about half the breadth, situated about the mid-length. The best 

 preserved specimen is elongate-ovate, strongly convex, rounded at both 

 ends, and shghtly truncated obliquely at the dorsal angles. 



Length 1 line ; width ^ a line. 



Allied to B. Logani (Jones), but is proportionally more elongated. 



Locality and Formation. — L, Point Rich, M, Table Head, Newfound- 

 land ; Quebec group. 



Collector. — J. Richardson. 



(There yet remain to be noticed, a number of species of Graptolites and several other 

 fossils from Newfoundland, not yet determined. These will be published in a contin- 

 uation of this article further on.) 



