A manual of zoologyWilliam Blackwood & Sons, 1878 |
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Side 54
... showing no composition out of definite parts or segments , having no definite body - cavity , presenting no traces of a nervous system , and having either no differentiated alimentary apparatus , or but a very rudimentary one . The ...
... showing no composition out of definite parts or segments , having no definite body - cavity , presenting no traces of a nervous system , and having either no differentiated alimentary apparatus , or but a very rudimentary one . The ...
Side 65
... showing the shell surrounded by a net- work of filaments derived from the body - substance . test , therefore , in this case , is not a true cuticular secretion , like that of the Mollusca , but it is truly immersed within the sarcode ...
... showing the shell surrounded by a net- work of filaments derived from the body - substance . test , therefore , in this case , is not a true cuticular secretion , like that of the Mollusca , but it is truly immersed within the sarcode ...
Side 66
... showing the pseudopodía protruded from the oral aperture of the shell ; c Discorbina ( after Schultze ) , showing the nautiloid shell with the foramina in the shell - wall giving exit to pseudopodia ; d Section of Nodosaria ( after ...
... showing the pseudopodía protruded from the oral aperture of the shell ; c Discorbina ( after Schultze ) , showing the nautiloid shell with the foramina in the shell - wall giving exit to pseudopodia ; d Section of Nodosaria ( after ...
Side 74
... showing the radiating pseudopodia . ( After Müller . ) The open ocean , sometimes in great numbers . They consist of sarcode - bodies , which are supported by a framework of radiat- ing siliceous spines , the extremities of which ...
... showing the radiating pseudopodia . ( After Müller . ) The open ocean , sometimes in great numbers . They consist of sarcode - bodies , which are supported by a framework of radiat- ing siliceous spines , the extremities of which ...
Side 76
... showing cellæform bodies , compound groups of spicules , and radiating pseudopodia . perforated by numerous rounded apertures or " fenestræ . " This form , therefore , approaches very closely to the Polycystina , especially to those in ...
... showing cellæform bodies , compound groups of spicules , and radiating pseudopodia . perforated by numerous rounded apertures or " fenestræ . " This form , therefore , approaches very closely to the Polycystina , especially to those in ...
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Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson Ingen forhåndsvisning tilgjengelig - 2015 |
Vanlige uttrykk og setninger
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