Animal Forms; A Textbook of Zoology

Animal Forms; A Textbook of Zoology

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...the appearance of a small dragon-fly, lays its eggs in light sandy soil. In this the resulting larvae excavate funnel-shaped pits, at the bottom of which they lie con cealed. Insects stumbling into their pitfalls are pelted with sand, which the ant-lion throws at them with a jerky motion of the head, and are speedily tumbled down the shifting sidee of the funnel to be seized and devoured. While the white ants are not in any way related to the true ants, they possess many similar habits. Associated in great companies, they excavate winding galleries in old logs and stumps, and, further, are most interesting because of the division of labor among the various members. The wingless forms are divided into the workers, which excavate, care for the young, and otherwise labor for the good of the others; and into the soldiers, huge-headed forms, Fig. 72.--Ant-lion larva plowing its way through the sand (upper figure) while another is commencing the excavation of a funnel-shaped pit similar to one on right. Photograph by A. L. Melandeb and C. T. Bbues. whose strong jaws serve to protect the colony. The remaining winged forms are the kings and queens. In the spring many of the royalty fly away from home, shed their wings, unite in pairs, and set about to organize a colony. The queen rapidly commences to develop eggs, and in some species her body becomes so enormously distended with these that she loses the power of locomotion and requires to be fed. A single queen has been known to lay eggs at the rate of sixty per minute (eighty thousand a day), and FiG. 73.--Termites or white ants, a, queen; 6, winged male; c, worker; d, soldier. those destined to royal rank are so nursed that they advance farther in their development than the remaining sterile...show more

Product details

  • Paperback | 62 pages
  • 189 x 246 x 3mm | 127g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236919653
  • 9781236919656