Palaeontographical Society Monographs Volume 6, Nos. 14-19

Palaeontographical Society Monographs Volume 6, Nos. 14-19

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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. 1852 edition. Excerpt: ...sake of comparisons. ' Since the description of our British Cretaceous Argiope had gone through the press, I received rom Mr. Suess, of Vienna, a most interesting communication on Argiope (Ter.) decemcoslata of Rcemer, in which that accurate observer had discovered the existence of a loop like that of Aryiope cistellula, &c. However, none of my French, Belgian, or English specimens belonging to the form I figure, and attributed by myself to A. decemcoslala, preserve the loop, or exhibit the mesial septum to the extent represented by Mr. Suess. It may be doubted whether these differences between my specimens and that of Mr. Suess are specific, or only due to age and state of preservation. " Prof. Forbes and Mr. Cuming having kindly given me specimens of the other three recent species of Argiope, I am able to add some details respecting them, which are necessary for the illustration of the genus. Argiope dccollala. Ar_.7i0pe Nmpolitana. I. Argiope cuneata (Risso), erroneously mentioned by me as a synonym with A. decollata, has only a single median septum; the lobes of the loop are free for one half their extent in the specimen examined, and blend with the shell, as we have noticed in some examples of A. decollata. ll. Argiope Neapolilana (Scacchi), T. seminulum, Phil. In this form the same longitudinal septum exists, but the loop was imperfect in the specimens at my disposal. III. Argiope cislellula (J. Wood). In this species the same mesial septum coexists with a complete two-lobed loop, as represented in A. Neapolitana. The animal is preserved, and differs only from the figure given at Part I, in having two lobes instead of four. In justice to M. Philippi, I must state that his figure of the animal of A. decollata is...show more

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  • Paperback | 126 pages
  • 189 x 246 x 7mm | 240g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236875761
  • 9781236875761