. Bulletin of the United States Geological and Geographical Survey of the Territories. Geology. ] SCUDDER ON PALEONTOLOGY OF FLORISSANT. COLORADO. 289. The examination of tlie immense series of specimens found at Floris- sant* lias not gone far enough to yield data sufficiently definite for gen- eralization of aiiy value, or which might not be altered or even reversed on further study. It may, nevertheless, be interesting to give a running notice of what has been observed in assorting the collection, and to make the single comparison with the Oeningen insect fauna which the number of indi
. Bulletin of the United States Geological and Geographical Survey of the Territories. Geology. ] SCUDDER ON PALEONTOLOGY OF FLORISSANT. COLORADO. 289. The examination of tlie immense series of specimens found at Floris- sant* lias not gone far enough to yield data sufficiently definite for gen- eralization of aiiy value, or which might not be altered or even reversed on further study. It may, nevertheless, be interesting to give a running notice of what has been observed in assorting the collection, and to make the single comparison with the Oeningen insect fauna which the number of individuals will furnish. This is indicated by the following table, based on a rough count of the Florissant specimens, but which cannot be far astray: Percentage of representation by— Hymenoptera Diptera Hemiptera Neuroptera .. Orthoptera ... Araclinicla — MjTiapoda — Lepidoptera . It will be seen that the proj^ortion of specimens of each order is very different in all that are well represented, with the sole exception of the Hemiptera, while the same groups (Orthoptera, Arachnida, Myriapoda, and Lepidoptera) are feebly represented in both. The greatest differ- ence occurs in the Diptera, which are less than 7 per cent, of the whole at Oeningen and about 30 per cent, at Florissant 5 in the Hymenoptera, which have less than 14 per cent, at Oeningen and 40 per cent, at Flo- rissant, due largely to the prodigious number of ants; while the case is reversed in the Coleoptera, which form nearly one-half the specimens found at Oeningen and only 13 per cent, at Florissant. We possess no count of the specimens found at Eadoboj, in Croatia, which is regrettable, since the fauna of Florissant appears to agree much better with it than with any other, at least if one may judge from the comparatively minor part played by the Coleoptera and the great number of ants; these lat- ter nuuiber 57 species in Eadoboj, and one of them has furnished 500 specimens. Still the comparison
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