The Proceedings of the Scientific Meetings of the Zoological Society of London

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Longman, Green, Longmans, and Roberts, 1883

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Page 157 - With some exceptions the Cetacea generally are timid, inoffensive animals, active in their movements, sociable and gregarious in their habits. Among the existing members of the order there are two very distinct types— the Toothed Whales, or Odontoceti, and the Baleen Whales, or Mystacoceti, which present throughout their organisation most markedly distinct structural characters, and have in the existing state of nature no transitional forms. The extinct...
Page 345 - Lankester's previously expressed views as to the near affinity of these two forms, hitherto usually referred to different classes of the animal kingdom, and to justify the association of Limulus with the Arachnida. — A paper was read by Dr. Gwyn Jeffreys, FRS, FZS, on the Mollusca procured during the cruise of HMS Triton between the Hebrides and Faroes in 1882.
Page 521 - ... specimens from a high tree, I was rather dreamily looking on the shrubs before me, when I became conscious of my eyes resting on a bird-excreta-marked leaf. How strange, I thought, it is that I have never got another specimen of that curious spider I found in Java which simulated a patch just like this. I plucked the leaf by the petiole while so cogitating, and looked at it half listlessly for some moments, mentally remarking how closely that other spider had copied nature ; when to my delighted...
Page 113 - ... they possess an analogue of that structure. This consists of a flat, narrow band, which commonly arises at the upper and posterior end of the plate-like ovary, gradually diminishes in width backwards, and finally becomes lost towards the end of the abdominal cavity. In the Salmon proper it disappears upon the air-bladder, opposite the commencement of the last fifth of the abdominal cavity, in the freshwater Trout on the sides of the intestine not far from the anus, in the Coregoni (Maranen) on...
Page 581 - Snout rounded, a little shorter than the diameter of the orbit ; canthus rostralis distinct ; loreal region concave ; nostril nearer the tip of the snout than the eye ; interorbital space broader than the upper eyelid; tympanum distinct, half the diameter of the eye.
Page 156 - Placentalia. Of the Placentalia our authors say that their affinities with one another are so complex that it is impossible to arrange them serially with any regard to natural affinities. They might, however, it seems to me, embody their own conclusions in classificatory form, and divide the Placentalia into four diverging sub-branches, the chief being (a) the Typidentata, the three others being (b) the Edentata, (c) the Cetácea, and (if) the Sirenia.
Page 155 - Our present divisions and terminology are," say Prof. Flower and Mr. Lydekker, "no longer sufficient for the purpose [of a classification which shall embrace extinct forms] ; and some other method will have to be invented to show the complex relationships existing between different animal forms when viewed as a whole." Apparently the authors mean, by the last five words of this sentence, " when all are viewed together.
Page 116 - I, left oviduct ; od. a, opening of the oviduct into the "bladder." third term of a series of modifications, tending towards the separation of the ureteric from the oviducal ducts, two terms of which are presented by the Ganoids. And it follows that the arrangement of the parts which obtains in the ordinary Salmonidae is a fourth term in the same series ; that is to say, the abortion of the oviducts, commenced in Osmerus, is completed in Salmo ; and all that remains of the primitive arrangement is...
Page 345 - These investigations seem to confirm Prof. Lankester's previously expressed views as to the near affinity of these two forms, hitherto usually referred to different classes of the Animal Kingdom, and to justify the association of Limulus with the Arachnida.
Page 116 - Salmonidae, and with that of all adult Ganoids except Lepidosteus. Even in the latter, Balfour has shown that the ovary passes through a similar condition in the embryonic state. The mesoarium, however, does not stop at the posterior end of the ovary, but, as Rathke points out, the fold of peritoneum which constitutes it is continued backwards to the oviducal aperture ; while laterally it passes into the peritoneal lining of the lateral walls of the abdomen, ending in a free concave edge immediately...

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