514 PROCEEDINGS OF THE ACADEMY OF [Sept., 
Fig. 80. — Penis-guard of T. tuscarora; ventral aspect. 
Fig. 81. — Penis-guard of T. rangiferina; lateral aspect. 
Fig. 82. — Gonapophyses of T. morrisoni; ventral aspect. 
Fig. 83. — Ventro-caudal margin of the ninth tergite of T. morrisoni; caudal 
aspect. 
Fig. 84. — Ovipositor of T. mandan; lateral aspect, 9t = ninth tergite; 
9s = ninth sternite. 
Fig. 8.5. — Ovipositor of T. piliceps; dorsal aspect. 
Fig. 86. — Ovipositor of T. imperfecta; dorsal aspect. 
Fig. 87. — Ovipositor of T. parshleyi; dorsal aspect. 
