Some Insects of Special Interest from Florissant, Colorado, and Other Points in the Tertiaries of Colorado and Utah (Classic Reprint)

Some Insects of Special Interest from Florissant, Colorado, and Other Points in the Tertiaries of Colorado and Utah (Classic Reprint)

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Excerpt from Some Insects of Special Interest From Florissant, Colorado, and Other Points in the Tertiaries of Colorado and Utah A single fore wing and part of its reverse are all that are known of this dragon fly. The wing is hyaline or very faintly infumated beyond the nodus; the reticulation is testaceous, the principal sector and the main veins above it, with the costal margin, ferruginous, deepening into blackish when bordering the ferrugineo-testaceous pterostigma. This latter is subequal, about four and a half times longer than broad, surmounts less than three unequal cellules, its inner bordering vein subeontinuous with the cross nervule below; twelve antecubitals, seven postcubitals; both triangles subequilateral with crowfoot division into three cells, the upper outer angle of the discoidal triangle perhaps some times severed by a cross vein to form a minute fourth cell outer margin of same triangle slightly bent above, scarcely more than a tenth longer than the upper margin, which in its turn is scarcely more than a tenth longer than the inner margin; of the borders of the inner triangle the lower is the longer, the others subequal. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.show more

Product details

  • Paperback | 42 pages
  • 152 x 229 x 2mm | 68g
  • Forgotten Books
  • United States
  • English
  • , black & white illustrations
  • 0243109660
  • 9780243109661