Bulletin of the American Museum of Natural History Volume 22

Bulletin of the American Museum of Natural History Volume 22

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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. 1906 edition. Excerpt: ... other two, the posterior higher than the anterior. Between the posterior pair, which occupies the extreme posterior corners of the thorax. there IS a smaller pair near the posterior edge and about as far apart as each of them is from the posterior comer. There are very few hairs on the pleura: . Abdomen very voluminous, egg-shaped. The chitinous investmemi is thin and finely and very regularly chagreened, except on the dorsal surface. where there are six thickened sclerites, the first being very narrow, the last reduced to a minute lunule, the second as long as the subequal third and follflill together, the fifth narrow and with a large crescentic glandular opening in its middle. There are no ventral sclerites. The seventh, eighth, and ninth seg' ments are suddenly attenuated, and the last bears a pair of small foliate flaps. The dorsal sclerites are covered with short uniformly distributed hairs; the remainder of the abdomen, except a large patch on each side just back of the hind leg and extending over about four segments, is covered with simllfll' hairs, each of which arises from a small but conspicuous, elliptical brovn spotThere is a circlet of macrochaetaa along the posterior edge of the sixth and on the anterior portion of the much smaller seventh segment. Legs rather stout, covered uniformly with short hairs except the cow which are nearly bare. Tips of hind coxae with a row of bristles. Tibia with prominent spurs. Empodia fimbriated, Hind mctatarsus slightly flattened and bearing on its plantar surface six transverse rows of bristles The body and legs are yellowish; abdomen white, except the dorsal sclerites and the spots from which the hairs arise, which are dark brown. Upper surface of head and thoracic dorsum light..show more

Product details

  • Paperback
  • 189 x 246 x 10mm | 327g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236890469
  • 9781236890467