64 



middle and at each end is partially cut off, by a short groove which 

 extends downwards and outwards from the neck-furrow ; the part above 

 the groove having somewhat the appearance of a large triangular tubercle. 

 Eyes large, semi-circular, in contact with the sides of the glabella. 



Thorax of ten segments : axis rather strongly convex ; about as wide 

 as the lateral lobes. Pleurae geniculated at an obtuse angle, at a little 

 less than half their length from the axial furrows ; strongly facetted in the 

 outer half Pleural groove most distinctly impressed about the mid 

 length of the pleurae, not reaching the outer extremities. 



Pygidium not so convex as the head ; nearly semi-circular ; a narrow 

 convex border all around the sides and posterior extremity ; axis conical, 

 extending to the marginal border. There are ten or eleven segments in 

 the axis, and six or seven (each with an obscure median groove) in the 

 sides lobes. 



Length of an entire specimen, seventeen lines ; width, eleven lines ' 

 length of head, six lines; of the thorax, seven lines; of the pygidium, five 

 lines. 



Locality and Formation- — Indian Gove, Gaspd; limestone. No. 8. 

 Collector— T. C- Weston. 



2. — On some neto species of Fossils, from the Primordial rocks of 

 Netvfoundland. 



The following species were collected by A. Murray, Esq., Director of 

 the Geogical Survey of Newfoundland, and described by me in the 

 Canadian Naturalist, New Series, Vol. VI, July, 1872. (E. B.) 



In Mr. Murray's " Report upon the Geogical Survey of Newfoundland 

 for the year 1870," the Primordial rocks of the south-easterly portion of 

 the Island are estimated to have a thickness of about 6000 feet. The 

 upper 476 feet, constituting Bell Island, in Conception Bay, a short 

 distance from the city of St. Johns, hold a pecuHar group of fossils, the 

 exact age of which has not yet been determined. The species thus far 

 collected consist entirely of Lingidce, Crimana and fucoids. Among the 

 latter are fine specimens of several species of Eopliyton, a genus first 

 discovered on this continent by Mr. Murray. The Lingidce, on a superficial 

 examination, might be taken for those of the Upper Potsdam of Wisconsin. 

 They are, however, specifically, and two of them are, perhaps, even, 

 generically, different. These two are distinguished by the remarkable 

 convexity of the dorsal valve. They have their nearest representatives in. 



