Proceedings of the American Academy of Arts and Sciences, Volumen70

abdomen Academy acute antennæ Antennæ small antial bristles apex apical Argentina argon AV/Vo Bolivia bristly hairs Brom brown brownish C. F. Clagg Cambridge Castellanos cerci Clagg Class coefficient compressibility Costa extending curved Davao Province densely dorsocentral bristles eclipse equation femora floral bracts fore wing forked fourth vein front Galog River glabrous gold halteres Harvard hind tibiæ Hsien hysteresis inflorescence inside the seam kg/cm² Lalun legs length lepidote linear lower lowest lateral bristles manganin margin measurements median medicine Megaselia Mesonotum Mesopleura Mez in DC middle Mindanao ocellar tubercle pair pale palpi Phan phot pleuræ Protoperlaria resistance scape scutellum section of costa segments Sellards sepals Shan short shorter sixth slender slightly species specimens stamens stout strong bristles strongly tarsi temperature tergites thermal expansion third vein tibia tibiæ Tillandsia upper postantennals values Venturi volume width yellow