A manual of zoologyWilliam Blackwood & Sons, 1878 - Zoology |
From inside the book
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Page 247
... abdomen has numer- ous black spots . In both species the oral and caudal extremities are narrowed before dilating into the suckers , and the body has from ninety to one hundred rings . The anterior sucker is small , with a lancet ...
... abdomen has numer- ous black spots . In both species the oral and caudal extremities are narrowed before dilating into the suckers , and the body has from ninety to one hundred rings . The anterior sucker is small , with a lancet ...
Page 256
... abdomen , and sends , forwards and backwards , two pairs of lateral cords . The lateral cords unite in front of and above the mouth into a hexagonal ganglion . This gives off two branches which dilate at their extremities into the ...
... abdomen , and sends , forwards and backwards , two pairs of lateral cords . The lateral cords unite in front of and above the mouth into a hexagonal ganglion . This gives off two branches which dilate at their extremities into the ...
Page 259
... abdomen distinct . One pair of antennæ . borne on the thorax . Abdomen destitute two pairs of wings on the thorax . Head , thorax , and Three pairs of legs of limbs . Generally CHAPTER XXXI . CRUSTACEA . CLASS I. CRUSTACEA . - The ...
... abdomen distinct . One pair of antennæ . borne on the thorax . Abdomen destitute two pairs of wings on the thorax . Head , thorax , and Three pairs of legs of limbs . Generally CHAPTER XXXI . CRUSTACEA . CLASS I. CRUSTACEA . - The ...
Page 260
... abdomen , each of which is composed of a certain number of somites , though opinions differ both as to the number of segments in each region , and as to their number collectively . By the majority of authorities the body is looked upon ...
... abdomen , each of which is composed of a certain number of somites , though opinions differ both as to the number of segments in each region , and as to their number collectively . By the majority of authorities the body is looked upon ...
Page 261
... abdomen , termed the " telson , " is regarded as an appendage , and not as a somite . Upon this view , the body of a ... abdomen proper , -that is , the region corresponding to the " abdomen " of insects and Arach- nida . The six somites ...
... abdomen , termed the " telson , " is regarded as an appendage , and not as a somite . Upon this view , the body of a ... abdomen proper , -that is , the region corresponding to the " abdomen " of insects and Arach- nida . The six somites ...
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Other editions - View all
Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson No preview available - 2015 |
Common terms and phrases
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