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OBSERVATIONS ON A UNIDIRECTIONAL FLIGHT OF ARMY CUTWORM MOTHS AND THEIR POSSIBLE BEARING ON AESTIVATION
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- 31 May 2012, pp. 241-242
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NESTING HABITS OF SPHEX XANTHOPTERUS (CAM.) (HYMEN.)
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- 31 May 2012, pp. 193-198
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PARASITES REARED FROM FOREST INSECTS IN 1929
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- 31 May 2012, pp. 1-2
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CHRYSOPIDS AS A FACTOR IN THE NATURAL CONTROL OF THE ORIENTAL FRUIT MOTH
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- 31 May 2012, pp. 121-126
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THE GEOGRAPHICAL RACE-CONCEPT IN LEPIDOPTERA
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- 31 May 2012, pp. 217-223
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NOTES ON SPHEX ABERTI (HALD.)
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- 31 May 2012, pp. 145-151
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Obituary
CHARLES JAMES STEWART BETHUNE, M.A., D.C.L.
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- 31 May 2012, pp. 97-98
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NOTES ON THE EARLY STAGES OF THE EUROPEAN PINE SHOOT MOTH*
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- 31 May 2012, pp. 169-173
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OUR IGNORANCE CONCERNING INSECTS
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- 31 May 2012, pp. 49-56
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OUR IGNORANCE CONCERNING INSECTS
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- 31 May 2012, pp. 73-78
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EVALUATION OF THE FOREST FLORA POPULATION
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- 31 May 2012, pp. 265-267
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OUR IGNORANCE CONCERNING INSECTS*
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- 31 May 2012, pp. 25-29
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A SECOND REPORT ON HEMIPTERA FROM THE NORTH SHORE OF THE GULF OF ST. LAWRENCE*
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- 31 May 2012, pp. 152-155
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NOTES ON SOME DIURNAL LEPIDOPTERA FIGURED IN HOLLAND'S REVISED BUTTERFLY BOOK*
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- 31 May 2012, pp. 267-270
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THE LIFE-HISTORY OF SCHISTOCERCA LINEATA SCUD*
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- 31 May 2012, pp. 98-102
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PROGNATHISM AND HYPOGNATHISM IN INSECTS
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- 31 May 2012, pp. 223-229
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A TAXONOMIC NOTE*
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- 31 May 2012, p. 173
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NEW COLEOPTERA XV
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- 31 May 2012, pp. 56-62
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NEW CANADIAN TRYPHONINAE (HYMENOP.; ICHNEUMONIDAE)*
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- 31 May 2012, pp. 242-247
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NOTE ON TWO CANADIAN SPECIES OF EUPITHECIA (GEOM., LEPID.)*
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- 31 May 2012, p. 2
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