PLATE VII. 



Fig. 1. Gephus cynosbati ? ; 1 a, mandibles; 1 b, 

 labium ; 1 c, maxillary palpus. 



Fig. 2. Gephus linearis <$ ; 2 a, mandibles; 2 b, 

 maxillary palpus ; 2 c, labium. 



Fig. 3. Cephus arundinis ? ; 3 a, maxillary pal- 

 pus; 3&, ovipositor; a, cerci ; b, oblong plate; c, 

 attachment of do. ; d, saw ; e, triangular plate ; /, 



Fig. 4. Xiphidria dromedarius ? ; 4 a, oviposi- 

 tor; l,hypopygium; 2, sheath; 3, borer; 4, triangular 

 plate ; 4 &, labium ; 4 c, maxilla ; 4 ^, head, from the 

 front ; 4 e, mandible. 



Fig. 5. Sirex juvencus ? ; 5 a, prosternum ; 5 , 

 pronotum (1), and prosternum (2) ; 5 c, mesopleura ; 

 5d, mesonotum from side and mesophragma; 5 e, 

 mesonotum from front; 5/, do. from behind the 

 mesophragma ; 5 g, metapleura ; 5 h, metanotum ; 



1, cenchri ; 2, fourth body segment. 



Fig. 6. Sirex gigas ? ; 6 a, ovipositor ; 1, tri- 

 angular plate ; 2, oblong plate ; 3, sheath of do. ; 4, 

 borer = saw of Tenfhredo ; 6 6, triangular and top 

 of oblong plate from beneath ; 6 c, apex of borer ; 

 6 d, apex of last abdominal segment = hypopgium ; 

 6 e, do. from above ; 1, anus ; 6 /", trophi ; 1, maxilla ; 



2, labium. 



Fig. 7. Sirex gigas $ . 



