50 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 69 



73. The same, genital rod. 



74. SimuUum vittattim Zetterstedt, female ninth segment and cerci. 



75. The same, genital rod. 



Plate 6 



76. Simnlium ventistnm Say, female ninth segment and cerci. 



77. The same, genital rod. 



78. SimuUum trivittattim Malloch, female ninth segment and cerci. 



79. The same, genital rod. 



SO. SimuUum arcUcum Malloch, female ninth segment and cerci. 



81. The same, genital rod. 



82. Simnlium virgatum Coquillett, female ovipositor. 



83. The same, genital rod. 



84. SimuUum pcrissum Dyar and Shannon, female ninth segment and cerci. 



85. The same, genital rod. 



86. SimuUum haematopotum Malloch, female ninth segment and cerci. 



87. The same, genital rod. 



88. SimuUum notatum Adams, female ninth segment and cerci. 



89. The same, genital rod. 



90. SimuUum griseum Coquillett, female ninth segment and cerci. 



91. The same, genital rod. 



92. SimuUum venator Dyar and Shannon, female ninth segment and 



cerci. 



93. The same, genital rod. 



94. SimuUum griseuryi Coquillett, male clasper. 



95. The same, male adminiculum. 



96. The same, male adminiculum arms. 



97. SimuUum venustum Say, male clasper. 



98. The same, male adminiculum. 



99. The same, male adminiculum arms. 



100. SimuUum pictipes Hagen, male clasper. 



101. The same, male adminiculum. 



102. The same, male adminiculum arms. 



103. SimuUum parnassum Malloch, male clasper. 



104. The same, male adminiculum. 



105. The same, male adminiculum. 



Plate 7 



106. SimuUum vittatum Zetterstedt, male clasper. 



107. The same, male adminiculum. 



108. The same, male adminiculum arms. 



109. SimuUum arcticutn Malloch, male clasper. 



110. The same, male adminiculum and arms. 



111. SimuUum randaUcum Dyar and Shannon, male clasper. 



112. The same, male adminiculum and arms. 



113. SimuUum jacumhae Dyar and Shannon, male clasper 



114. The same, male adminiculum (above) and arms (below). 



115. SimuUum trivittatum Malloch, male clasper. 



116. The same, male adminiculum and arms. 



117. Sim^uUum notatum Adams, male clasper. 



118. The same, male adminiculum and arms. 



119. SimuUum pcrissum Dyar and Shannon, male clasper. 



