. 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. FAUNA OF THE DEVONIAN PLANT-BEDS OF BT JOHN. 525 but it is very interesting to find, in addition to minor peculiantics, that near tlie base of the wing, between the two middle veins, there is a heavy cross-vein from wiiieh new prominent veins take their Fig. 182.—Ilomothetua f


. 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. FAUNA OF THE DEVONIAN PLANT-BEDS OF BT JOHN. 525 but it is very interesting to find, in addition to minor peculiantics, that near tlie base of the wing, between the two middle veins, there is a heavy cross-vein from wiiieh new prominent veins take their Fig. 182.—Ilomothetua fossilia, rise; this is characteristic of the Odonata, and of that family only. AVe have, therefore, a new family representing a synthetic type which combines the features of structure now found in the Odonata and Sialina., very distant members of the Neiiroptera. The fragment is sufficiently preserved to show the direction, extent, and mode of branching of nearly every principal ncrvure. It is evidently a portion of an upper wing; the insect measured not far from 3^ inches in expanse of ; Fig. 183.—Lilhcntomum Ilarttii, Scudder. " This was the first specimen discovered by Mr C. F. Hartt, and I have, therefore, named it after him:—apparently, it docs not belong to any fiimily of Ncuroptera represented among living forms. It agrees more closely with the family Hemeristina, which I founded upon a fossil insect discovered in Illinois, than it does with any other; but is quite distinct from that, both in the mode of division of the nervures and in the peculiar cross-veining. The fragment which Mr Hartt discovered is very imperfect; but, fortunately, pi-eserves the most important parts of the wing. I am inclined to think that it was a* lower wing. The insect probably measured Z\ inches in expanse of ; Fig. 18-1.—Xenoneura antiquorum, Scudder. " Although In this fragment we see only the basal half or third of a wing, the peculiar mode o


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Keywords: ., bookauthordawsonjohnwilliamsir1, bookcentury1800, bookdecade1870