8 ILLUSTRATIONS. 



Page. 



Plate V. Fig. 97. — Rhagoletis vingulata: Stigmal plate 38 



98. — Rhagoletis cingulata: Anterior spiracle 38 



99. — Anastrepha ludens: Stigmal plates 38 



100. — Ceratitis capitata: Stigmal plate 38 



101. — Dams cucurhitse: Head, side view 38 



102. — Dacus cucurbits: Anterior spiracle 38 



103. — Dacus ferrugineus: Anterior spiracle 38 



104. — Dacus cucurhitse: Stigmal plates 38 



105. — Dacus ferrugineus: Stigmal plate 38 



VI. Fig. 106. — Ilomalomyia sp. : Dorsal view 38 



107. — Pegomya hrassicm: Anterior spiracle 38 



108. — Fhorbia floccosa: Anterior spiracle 38 



109.— Fhorhia floccosa: End of body 38 



110.— Pegomya bicolor: Anterior spiracle 38 



111. — Pegomya fusciceps: Stigmal plate 38 



112. — Pegomya bicolor: Stigmal plate 38 



113. — Pegomya brassicse: Margin of stigmal field 38 



114. — Pegomya brassicse: Stigmal jilate 38 



115. — Muscina stabulans: Cephalopharyngeal skeleton 38 



116. — Pegomya fusciceps: Head, side view 38 



117. — Anthomyia sp..- Tip of body, side view 38 



118. — Pegomya brassicse: Cephalopharyngeal skeleton 38 



119. — Pegomya cepetorum: Stigmal plate and anterior spiracle . . 38 



]20. — Musca domestica: Cephalopharyngeal skeleton 38 



VII. Fig. 121. — Euxesta notata: Cejihalopharyngeal skeleton 38 



122. — Piophila casei: Tip of body, below 38 



123. — Piophila casei: Tip of body, above 38 



124. — Piophila casei: Anterior spiracle 38 



125. — Rhagoletis pomonella: Cephalopharyngeal skeleton 38 



126. — Calliphora erythrocephala: Cephalopharyngeal skeleton — 38 



127. — Homalomyia sp. : Cephalopharyngeal skeleton 38 



128. — Protocalliphora.- Cephalopharyngeal skeleton 38 



VIII. Fig. 129. — Drosophila ampelophila: Dorsal view 38 



130. — Drosophila ampelophila: Stigmal plate 38 



131. — Lucilia sericata: Cephalopharyngeal skeleton 38 



132.^ — Dacus cucurbitse: Cephalopharyngeal skeleton 38 



133. — Drosophila ampelophila: Cephalopharyngeal skeleton .... 38 



134. — Sarcophaga incerta: Cephalopharyngeal skeleton 38 



135. — Drosophila ampelophila- Tip of body, side view 38 



136. — Drosophila ampelophila: Head of pupa 38 



137. — Drosophila ampelophila: Anterior spiracle 38 



TEXT FIGURE. 



Fig . 1 . Larva of a muscid '. 14 



