Kongl. Svenska Vetenskaps-Akademiens Handlingar Volume 22, Nos. 1-7

Kongl. Svenska Vetenskaps-Akademiens Handlingar Volume 22, Nos. 1-7

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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. 1887 edition. Excerpt: ...lamina is triangular, obtuse, covered with stout bristles; the secondary lamina is more narrowly elongated, covered all around with bristles, and provided at the apex with a strong, feebly curved spine. The mawillipeds (Pl. VII, fig. 9) consist of a strong, broad, basal portion; the lateral laminae are obtusely serrated on the lower half of the inner margin; the median lobe is strongly developed, bent inwards, the apex forming a gouge-shaped projection, richly covered with short, strong bristles. The perazon. The first segment is a little longer than the second, the seventh segment is the longest of all. The epimerals are as long as the under margins of the corresponding segments; the epimeral of the fifth pair is the longest of all. The branchial sacks are fixed to the second to sixth pairs of perazopoda; they are as long as the femora of the corresponding pairs. The first pair of perwopoda (Pl. VII, fig. 10, 11 and 12). The femur is broadly ovate, the front margin being more convex than the hind one, and showing a long narrow groove for the reception of the following joints. The femur is about twice as long as broad, and nearly as long as the four following joints together. The genu is smooth, scarcely more long than broad. The lower hinder corner of the tibia is strongly produced, forming a spoon--shaped process, not fully reaching to the base of the carpal process; the lower margin of the tibial process is fringed with stout bristles. The carpus is strongly developed, the front margin is almost straight, a little shorter than the front margin of the metacarpus, the hind margin is straight, or rather somewhat excavated; the carpal process is nearly as long as the stem of the joint, robust, knife-shaped; the front margin, the edge of...show more

Product details

  • Paperback
  • 189 x 246 x 17mm | 562g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236944593
  • 9781236944597