234 R. E. SNODGRASS. 



Fig. 84. Tipula retusa. terminal part of abdomen, lateral view, x 10. 



" 85. " "' apical appendages of left side, outer view. 



" 86. '' tergum of hypopygium, dorsal view. 



" 87. '' " guard of penis, lateral view. 



" 88. " central vesicle (c. v.) and penis (p.). 



" 89. " inermis, apical appendages of left side, outer view. 



" 90. " anal tube, or tenth segment. 



" 91. " " distal half of abdomen, lateral view, x 10. 



" 92. " " sternum of eighth segment, ventral view. 



" 93. " guard of penis, dorsal view. 



PLATE XIV. 



Fig. 94. Tipula bicomis, distal half of abdomen, lateral view, x 10. 



" 95. " " guard of penis {p. g.) and supporting framework. 



" 96. "' " lateral lobe of ninth sternum. 



" 97. " " central vesicle (c.v.) and base of penis (p.) ventral view. 



" 98. " " apical appendages of left side, outer view. 



" 99. " " guard of penis (p. g.) and its supporting framework. 



" 100. " " ventral plate of anal tube. 



" 101. " " tergum of hypopygium, dorsal view. 



" 102. " streptocera, hypopygium, dorsal view. 



" 103. " terminal part of abdomen, lateral view, x 10. 



" 104. " bisetosa, apical appendages of left side, outer view. 



" 105. '* streptocera, apical appendages of left side, outer view. 



" 106. " bisetosa, distal half of abdomen, lateral view, x 10. 



" 107. " " guard of penis {p. g.) and appendages below it. 



" 108. " flavicans, distal half of abdomen, lateral view, x 10. 



PLATE XV. 



Fig. 109. Tipula unicincta, distal half of abdomen, lateral view, x 10. 



'' 110. " " apical appendages of left side, outer view. 



" 111. " " guard of penis (p. g.) and appendages below it. 



" 112. " acuta, apical appendages of left side, outer view. 



'' 113. " " eighth sternum of abdomen, ventral view. 



" 114. unicincta, posterior end of eighth abdominal sternum, anterior 



(i. e. dorsal) view. 



" 115. " acuta, ventral appendages of ninth abdominal sternum. 



'' 116. " " guard of penis, dorsal view. 



" 117. " " tergum of hypopygium, dorsal view. 



" 118. tephrocephala, terminal part of abdomen, lateral view, x 10. 



" 119. " tricolor, terminal part of abdomen, lateral view, x 10. 



' 120. '' tephrocephala, tergum of hypopygium, dorsal view. 



" 121. " tricolor, apical appendages of left side, outer view. 



" 122. " tephrocephala, apical appendages of left side, outer view. 



