. Acadian geology : the geological structure, organic remains, and mineral resources of Nova Scotia, New Brunswick, and Prince Edward Island. Geology -- New Brunswick; Geology -- Nova Scotia; Geology -- Prince Edward Island; Paleontology -- New Brunswick; Paleontology -- Nova Scotia; Paleontology -- Prince Edward Island. 308 THE CARBONIFEROUS SYSTEM. delicate oblique striag on their edges. The ribs vary much in their distance in di£ferent parts of the same specimen, and in different Fig. 117.—Comdaria specimens (from five in a line to ten in a line). They form an angle of about
. Acadian geology : the geological structure, organic remains, and mineral resources of Nova Scotia, New Brunswick, and Prince Edward Island. Geology -- New Brunswick; Geology -- Nova Scotia; Geology -- Prince Edward Island; Paleontology -- New Brunswick; Paleontology -- Nova Scotia; Paleontology -- Prince Edward Island. 308 THE CARBONIFEROUS SYSTEM. delicate oblique striag on their edges. The ribs vary much in their distance in di£ferent parts of the same specimen, and in different Fig. 117.—Comdaria specimens (from five in a line to ten in a line). They form an angle of about 120° in the middle line of each face—breadth of full-grown specimens about half an inch; length, two inches or more. There is no indication whatever that this shell had any internal partitions, though it occurs both flattened, as at Big Plaister Rock, and retain- ing its original fonn, as at Irish Cove and Windsor. Mr Hartt has proposed the name " Nova Scotica " for a more elongated fonn, with finer and more numerous ribs ; but on comparmg numerous specimens, I am inclined to regard it as a variety. The shell of Conularia is usually regarded as that of a Pteropod, w^hich seems the most probable view. If the shell of a Cephalopod, it must have been of the nature of a straight Argonauta. It is curious to observe in the flattened specimens that the shell always gives way at the edges, with- out breaking, as if there was a suture or weak line there. The shell was exceedingly thin, especially at the smaller extremity, where it seems to terminate in an obtuse rounded form. The aperture in the best specimens rises at the sides in angles corresponding to those of the plications. Gasteropoda. Euomphahcs, a small species with narrow whorls, resembling E. quadratus, M'Coy, but slightly rounded above and marked with lines of growth, appears in fragments in Mr Hartt's collections from Windsor, and seems to be the same with still more imperfect specimens in my own collection
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