 | Encyclopedias and dictionaries - 1841
...place, in the middle of the lower surface, are furnished with tentacles of very different form and size. These different degrees of complication have given rise to very numerous divisions. For these we refer the reader to the ' Regne Animal.' The Arachnodermata form the second class of M.... | |
 | Charles Knight - Encyclopedias and dictionaries - 1866
...place, in the middle of the lower surface, are furnished with tentacles of very different form and size. These different degrees of complication have given rise to very numerous divisions. The Arachnodermata form the second class of M. de Blainville's Actinoioaria. He observes that this... | |
 | Encyclopedias and dictionaries - 1866
...place, in the middle of the lower surface, are furnished with tentacles of very different form and size. These different degrees of complication have given rise to very numerous divisions. The Arachnodermata form the second class of M. de Blainville's Actinozoaria. He observes that this... | |
 | National cyclopaedia - 1879
...place, in the middle of the lower surface, are furnished with tentacles of very different form and size. These different degrees of complication have given rise to very numerous divisions. In these animals no nerves have been satisfactorily demonstrated, yet they appear to possess the sense... | |
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... umbrella. Its contractions and dilatations concur to the motivity of the animal. The edges of this umbrella, as well as the mouth, or the suckers, more or less prolonged into pedicles, which take its place, in the middle of the lower surface, are... 