Bell, Ernest Layton.Dos Passos, Cyril F., 1887-2005-10-062005-10-061954http://hdl.handle.net/2246/24315 p. ; 24 cm.Includes bibliographical references (p. 4-5).496606 bytesapplication/pdfen-USQL1 .A436 no.1700, 1954Megathymus aryxnaMegathymus aryxna -- Type specimens.Megathymidae -- Nomenclature.Butterflies -- Arizona -- Prescott RegionButterflies -- Central AmericaButterflies -- North AmericaButterflies -- Type specimens.Insects -- Arizona -- Prescott RegionInsects -- Central AmericaInsects -- North AmericaInsects -- Type specimens -- North America.text