6 



Desaiption. — The only specimen of this species in the collection is a 

 fragment four inches and a-hal£ in length, fourteen lines in diameter at the 

 larger and nine hues at the smaller extremity. Where the diameter is 

 eleven lines the cavity of the cup is four and a-half lines across, and the 

 space between the walls three lines. Of the radiating poriferous septa 

 there are about sixty ; they are so irregular that it is only in certain places 

 in finely pohshed sections that the radiated structure can be detected. On 

 one side where the specimen is weathered the structure presents the 

 appearance of a rather compact cellular tissue. The form appears to be 

 elongate conical, gradually tapering, the surface marked by wide shallow 

 encircling oblique annulations, from three to six lines distant from each 

 other. The outer wall does not seem to be poriferous, but this appearance 

 may be due to the crystalline condition of the rock mto which it is 

 converted. 



Locality and Formation. — Anse au Loup, on the north shore of the 

 Straits of Belle Isle ; limestone of the Potsdam group. 



Collector. — J. Richardson. 



BRACHIOPODA. 



Obolus Labradoricus. (N. sp.) 



Pig. 6. 

 Fig. 6. — Dorsal valve of 0. Labradoricus. 



Description. — Dorsal valve sub-circular, the hinge-line straight and 

 equal to about three-fourths the width of the shell ; rather strongly and 

 uniformly convex, most prominent at one-fourth the length from the beak, 

 the latter small, neatly pointed, scarcely distinct from the cardinal edge. 

 Surface with fine concentric strias, which converge slightly on approaching 

 the cardinal edge 15 to 20 in one line, and also with a few coarser con- 

 centric undulations of growth, the whole crossed by minute radiating 

 strise just visible to the naked eye. The shell is black and friable like 

 that of a Idnf/ula. Length, 5^ lines ; width, about 6 lines. 



Ventral valve unknown. 



Locality and Formation. — Anse au Loup, on the north shore of the 

 Straits of Belle Isle. Limestone of the Potsdam group. 



Collector. — J. Richardson. 



