The New Encyclopaedia Britannica: Suppl, Volume 16Encyclopaedia Britannica, 1997 |
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Page 846
... pair of thoracic limbs usually with pincers ; abdomen short , usually with 5 pairs of biramous appendages ; 2-25 mm ; mainly marine ; about 500 species . Order Isopoda ( pill bugs , wood lice , sea slaters ) . Carbonifer- ous to present ...
... pair of thoracic limbs usually with pincers ; abdomen short , usually with 5 pairs of biramous appendages ; 2-25 mm ; mainly marine ; about 500 species . Order Isopoda ( pill bugs , wood lice , sea slaters ) . Carbonifer- ous to present ...
Page 849
... pairs of large trunk limbs project beyond carapace ; trunk ends in a large flat telson with a pair of long rami ; overall length up to 10 cm . Critical appraisal . Some authorities classify the Spini- caudata and Laevicaudata as ...
... pairs of large trunk limbs project beyond carapace ; trunk ends in a large flat telson with a pair of long rami ; overall length up to 10 cm . Critical appraisal . Some authorities classify the Spini- caudata and Laevicaudata as ...
Page 852
... pair of plates covering over the mantle opening is provided with a transverse adductor muscle and discrete retractor muscles . The nervous system . The nervous system , ladderlike in some primitive pedunculate barnacles , is condensed ...
... pair of plates covering over the mantle opening is provided with a transverse adductor muscle and discrete retractor muscles . The nervous system . The nervous system , ladderlike in some primitive pedunculate barnacles , is condensed ...
Contents
CHINA | 36 |
CHINESE LITERATURE | 231 |
CHORDATES CHRISTIANITY | 251 |
Copyright | |
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