A manual of zoologyWilliam Blackwood & Sons, 1878 |
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Página 133
... feet in diameter , with tentacles more than fifty feet in length , the fixed Lucernaroid from which it was produced not being more than half an inch in height . As regards the special structure of these gigantic reproduc- tive bodies ...
... feet in diameter , with tentacles more than fifty feet in length , the fixed Lucernaroid from which it was produced not being more than half an inch in height . As regards the special structure of these gigantic reproduc- tive bodies ...
Página 172
... feet or more in thickness , produced by the combined growth of different species of coralligenous Actinozoa . As before said , a mean winter temperature of not less than 66 ° is necessary for their existence , and therefore nothing ...
... feet or more in thickness , produced by the combined growth of different species of coralligenous Actinozoa . As before said , a mean winter temperature of not less than 66 ° is necessary for their existence , and therefore nothing ...
Página 187
... feet , can be protruded at the will of the animal through the pores which perforate the ambulacral areas , and can be again retracted . means of these locomotion is effected , the tube - feet be- ing capable of protrusion to a length ...
... feet , can be protruded at the will of the animal through the pores which perforate the ambulacral areas , and can be again retracted . means of these locomotion is effected , the tube - feet be- ing capable of protrusion to a length ...
Página 188
... feet are furnished with calcareous spicules . The total area over which the tube - feet can be protruded depends upon the extent to which the " ambulacral " or " pori- ferous " zones of the test are developed . In the typical or ...
... feet are furnished with calcareous spicules . The total area over which the tube - feet can be protruded depends upon the extent to which the " ambulacral " or " pori- ferous " zones of the test are developed . In the typical or ...
Página 189
... feet , and which are not uni- versally present ; partly by the tube - feet and their secondary vesicles in general ; and partly by the vascular lining of the test and the mesentery . The sea - water is admitted to the body - cavity ...
... feet , and which are not uni- versally present ; partly by the tube - feet and their secondary vesicles in general ; and partly by the vascular lining of the test and the mesentery . The sea - water is admitted to the body - cavity ...
Índice
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363 | |
370 | |
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386 | |
398 | |
408 | |
141 | |
156 | |
166 | |
180 | |
191 | |
198 | |
206 | |
214 | |
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302 | |
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425 | |
443 | |
457 | |
469 | |
475 | |
484 | |
510 | |
523 | |
537 | |
549 | |
568 | |
577 | |
590 | |
614 | |
779 | |
782 | |
Outras edições - Ver tudo
Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson Pré-visualização indisponível - 2015 |
Palavras e frases frequentes
abdomen adult alimentary canal ambulacral amongst animal Annelides antennæ anus aperture appendages Arachnida articulated attached birds bivalve body bones Brachiopoda branchiæ branchial calcareous carapace cavity cephalothorax chitinous ciliated composed comprising consists contractile Crustacea Ctenophora developed disc distinct division dorsal embryo Eocene external extinct extremity feet females fins fishes Foraminifera fossil furnished gemmation genera genus gills head horny Huxley Hydrozoa incisors Insects integument intestine known labium larva larvæ legs limbs living locomotive males Mammals mandibles margin maxillæ membrane molars Mollusca mouth nervous system operculum organs ovum Owen pairs Paleozoic parasitic placed plates polypide polypites Polyzoa portion possess posterior present regarded reproductive Reptiles resembling respiratory Rotifera rudimentary Scolecida segments shell side Silurian single skeleton sometimes somites species spines stomach structure sub-order surface tail teeth tentacles termed thorax toes transverse tube upper usually valves ventral Vertebrates vesicle whilst wings Zoantharia zooids