45 



niiicli lonjrer than tlie fust; first and second 

 joinis almost equal in len.n'tli. 



** Hind tibia; loiij;, sleucler, not toliaceous. Fourth 

 joint uf the antenuaj slender, as lung us iho 

 second and third tojjether. 



f No acute point between the antenna;. 

 X Prolhorax unarmed. 



§ Antenna} somewhat shorler than the body ; 

 second and third joints almost equal, or the 

 second very slij^htly shorter than the third. 

 Apical anjiie of the corium distinctly and 

 narrowly extended beyond the middle of the 

 membrane. 



X Prothorax not dilated. 



23. QuiNTius. 24. Myusilus. 

 X X Hind angles of the prothorax much dilated. - 



§§ Antenna) two-thirds of the length of the body; 

 second joint very sliglilly longer than the 

 third; fourth joint as long as the second 

 and third together. Hind angle of the 

 prothorax on each side forming a somewhat 

 acute tooth, which is inclined hind ward. 

 Apical angles of the abdominal segments 

 from the first to the filth acute, slightly 

 prominent. Apical angle of the corium 

 hardly extending beyond the middle of the 

 membrane, more shortly and less narrowly 

 elongated than iu Nematopus. 



^ Prothorax spinous. - - - - 



ft An acute point between the anienuic. 

 I Third joint of the rostrum longer than the 

 fourth. Hind angles of the prothorax 

 prominent. - . - - 



30. JUNIA. 31. LucuixiA. 



JJ Third joint of the rostrum shorter than the 

 fourth. Hind angles of the prothorax not 

 prominent. . . . - 



!1. Gracchus 



22. Sagcntus. 

 5. Nematopus. 

 26. Acooopus. 



27. M ERA ROUS. 

 28. HiMELLA. 



29. Salapia. 

 32. Petalops. 



33. Plaxiscelis 



Genus 1. RHOMBOGASTER, C. II. 410. 

 1. Rhombogaster luteus, C. 11.413. 

 a, b. Honduras. From Mr. Dyson's collection. 

 c. Honduras. 



Genus 2. ACROCLYTRUM. 

 Acroclytrum, Mayr, Verli. Zool. But. Gesell. IVieu. xv. 432. Hem. Ilel. 83. 



1. Acroclytrum muricatum. 

 nmricatum, Mayr, Vtrh. Zool. But. Gesell. Wicii. xv. 432. 

 Australia. 



