14 Annals Entomological Society of America  [Vol. XIV, 
EXPLANATION OF PLATE I. 
The following abbreviations attached to the Figures signify as follows: 
viii s.—Eighth sternite. 
ix t.—Ninth tergite. 
ix s.—Ninth sternite. 
subt. p.—Suptergal process. 
ix p.—Ninth pleurite. 
pl. s.—Pletral suture. 
I. ap. ap.—Inner apical appendage. 
out. ap. ap.—Outer apical appendage. 
1. ap. ap.—Lower apical appendage. 
p. g.—Penis guard. 
1. Tipula diversa. Upper view of hypopygium. 
la. Lateral view of pleurite, showing appendages and pleural suture. 
2. Tipula lyrifera. Upper view of hypopygium. 
3. Tipula madina. Upper view of hypopygium. 
4. Tipula sinistra. Upper view of hypopygium. 
5. Tipula spaldingi. Upper view of hypopygium. 
6. Tipula impudica. Upper view of hypopygium. 
6a. Lateral view of hypopygium. 
6b. Ninth tergite from above. 
6c. Ninth tergite from below. 
7. Tipula pyramis. Lateral view of eighth sternite. 
7a. Eighth sternite, seen from below. 
8. Tipula dimidiata. Dorsal aspect of ninth tergite. 
9. Tipula sinistra. Upper view of ninth tergite. 
10. Tipula mitrata. Caudal part of hypopygium showing lower apical append- 
ages, seen from above. 
