Life by the Seashore; An Introduction to Natural History

Life by the Seashore; An Introduction to Natural History

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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: ...large scale of the antennse, and turns up at the point, forming a cruel-looking weapon. It has eight or nine teeth above, placed near the base, and five or six beneath. The filaments of the antennae, and two of those of the antennules, are very long, so that the trailing threads are very conspicuous objects. The strong abdomen, with its well-developed appendages, has already been noticed. The other common species of prawn (P. squilla, Fig. 47) is also typically an inhabitant of deep water, but it occurs not infrequently in rock pools, especially at low tides. Such specimens are usually females carrying eggs. The colour is greyish white with touches of brighter colour. The differences from the preceding species are not very well marked, especially if only small specimens of P. serratm are available; but it will be noticed that in the present form the rostrum is nearly straight, and has seven or eight teeth above, and only three beneath. The rostrum is also relatively shorter, and it does not usually exceed the leDgth of the antennal scale. The whole prawn does not exceed two inches in length. Either of these prawns will repay careful study, for which their relatively large size peculiarly fits them. There are some other British species of Palmmon, but these are rare, and need not be considered here. The next form to be considered is the Esop prawn, or shrimp (Pandalns annulicornis), which, like the true prawns, is typically an inhabitant of deep water, but is occasionally met with in rock pools. It is of much the same size as Palcemon squilla, which it resembles not a little, but is of a somewhat brighter colour, the long antennae in particular being in life beautifully ringed with scarlet. Like most of the smaller Crustacea, it loses most...show more

Product details

  • Paperback | 112 pages
  • 189 x 246 x 6mm | 213g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236833465
  • 9781236833464