OF WASHINGTON. 203 



4. Abdomen oblong or long-ovate; parapsidal furrows only slightly indi 



cated anteriorly; fifth segment nearly as long as the first four ab 

 dominal segments united, the second and third together scarcely 

 longer than the fourth, the first and fourth subequal ; front wings 

 maculate 14. Ptinobius Ashm. 



5. Wingless species. 



Abdomen ovate, ending in a long ovipositor; antennae 13- 



jointed, with 3 ring-joints 15. Cea Hal. 



Winged species. 



Abdomen as seen from above rotund, compressed or carinate be 

 neath. 



Front wings hyaline, the stigmal vein hardly two-thirds 

 the length of the marginal and a little shorter than the 

 postmarginal ; metathorax with lateral folds, the spiracles 



oval-elliptic .* .. 16. Tomicobia Ashm., n. g. 



Abdomen conic-ovate, the segments subequal, the ovipositor not 

 exserted. 



Front wings with two transverse bands or maculae ; pro- 

 notum transverse quadrate, narrowed medially; pedicel 



not lengthened 17. Chiropachys Westw. 



Front wings without bands or maculae; pronotum trans 

 verse quadrate, but not narrowed medially, and well 

 separated ; pedicel much lengthened. 



18. Schizonotus Ratzb. 



Abdomen conic-ovate or conical, the terminal segments tubular, 

 the ovipositor very long. 



Last two abdominal segments very slender, tubular. 



19. Thaumasura Westw. 

 Last five abdominal segments very slender, tubular. 



20. Solenura Westw. 



6. Mesothoracic furrows complete 7 



Mesothoracic furrows incomplete, indicated only anteriorly. 



Pronotum short, narrowed medially. 



Marginal vein thickened, shorter than the postmarginal. 



21. Zapachia Forst. 

 Marginal vein not thickened. 



Abdomen conical, the segments after the first, which 

 is the longest, subequal. 



Front wings with one transverse band, the 



stigmal club large.... 22. Acrocormus Forst. 



Front wings without a band, the stigmal club 



small 23. Caudonia Walk. 



Pronotum very long, narrowed anteriorly. 



Abdomen ovate, shorter than the thorax, the segments 

 subequal, the middle tarsi incrassate. 



24. Notanisus Walk. 



