A manual of zoologyWilliam Blackwood & Sons, 1878 |
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Página 57
... head of a small pin up to as much as half an inch in length , when they assume the aspect of small worms . The integument or cuticle with which the protoplasmic body is enclosed may be quite smooth or striated , or it may be furnished ...
... head of a small pin up to as much as half an inch in length , when they assume the aspect of small worms . The integument or cuticle with which the protoplasmic body is enclosed may be quite smooth or striated , or it may be furnished ...
Página 63
... head is still defective . It is certain , at any rate , that many organisms , both vegetable and ani- mal , pass through amaboid stages - consist- ing , for a longer or shorter period , of proto- plasm capable of emitting " pseudopodia ...
... head is still defective . It is certain , at any rate , that many organisms , both vegetable and ani- mal , pass through amaboid stages - consist- ing , for a longer or shorter period , of proto- plasm capable of emitting " pseudopodia ...
Página 136
... head are all extinct , and they are in many respects so dissimilar , and their structure is so far from being entirely understood , that it is B doubtful if any definition can be framed which will 136 MANUAL OF ZOOLOGY .
... head are all extinct , and they are in many respects so dissimilar , and their structure is so far from being entirely understood , that it is B doubtful if any definition can be framed which will 136 MANUAL OF ZOOLOGY .
Página 197
... head star , the arms are divided from the base , first dichotomously , and then into many branches . In Ophiura , the sand - star , the arms serve for reptation ( creep- ing ) , and are undivided , often exceeding the diameter of the ...
... head star , the arms are divided from the base , first dichotomously , and then into many branches . In Ophiura , the sand - star , the arms serve for reptation ( creep- ing ) , and are undivided , often exceeding the diameter of the ...
Página 215
... head " ) armed with hooklets , or suckers , or both com- bined . There is no mouth or alimentary canal , and the ... head , ” or " nurse , " whilst the joints are simply hermaphrodite , gene- rative segments , which the " head " throws ...
... head " ) armed with hooklets , or suckers , or both com- bined . There is no mouth or alimentary canal , and the ... head , ” or " nurse , " whilst the joints are simply hermaphrodite , gene- rative segments , which the " head " throws ...
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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