Annual Report of the Board of Regents of the Smithsonian InstitutionThe Institution, 1921 |
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Сторінка 385
... pupa has inherited different traditions in the art of digging . To understand its method of work we must first study the construction of its front legs , for these are its principal tools . The front leg of the pupa is composed of the ...
... pupa has inherited different traditions in the art of digging . To understand its method of work we must first study the construction of its front legs , for these are its principal tools . The front leg of the pupa is composed of the ...
Сторінка 387
... pupa play an important part in its digging also . Early in the spring , before the proper emergence season , pupae are often found beneath logs and stones . This is to be expected - to the ascending pupae the surface is at the top of ...
... pupa play an important part in its digging also . Early in the spring , before the proper emergence season , pupae are often found beneath logs and stones . This is to be expected - to the ascending pupae the surface is at the top of ...
Сторінка 390
... pupa feels about on the twig , grasping now here , now there , till its claws take a firm hold on the bark . At the same time it sways the body gently from side to side as if trying to settle comfortably for the next act . Thirty - five ...
... pupa feels about on the twig , grasping now here , now there , till its claws take a firm hold on the bark . At the same time it sways the body gently from side to side as if trying to settle comfortably for the next act . Thirty - five ...
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Bureau of American Ethnology | 17 |
Report on the United States National Museum | 25 |
EXECUTIVE COMMITTEE AND REGENTS | 100 |
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