1906.] 107 



(12) 15 Metaiioluni not ceiil rally carinate iliroughouL. 



(17) 16 Head and thorax partly flavous 7. variegalor, Nees. 



(16) 17 Uead and thorax black 8. w«>m^«*, Nees. 



(11) 18 Second abcissa of radius shorter than 1st cubital ...9. siabilis, Wesm. 



(2) 19 Fourth segment evidently smoother than the preceding. 



(25) 20 Three basal segments rugose. 



(22) 21 Metanotum centrally carinate throughout 21. satanas, S ■ 



(21) 21 Metanotum not carinate throughout. 



(24) 23 Abdomen centrally entirely black 12. exarafor, Marsh. 



(23) 21 Second and 3rd segments laterally broadly testaceous... 



11. erraticus, Wesm. 

 (20) 25 Two basal segments above rugose. 



(29) 26 Wings nigrescent or infumate. 



(28) 27 Second segment with lateral longitudinal impressions... 



13. triangularis, Nees. 

 (27) 28 Second segraent with no lateral impressions 14. roberti, Wesm. 



(26) 29 Wings hyaline or hardly clouded. 



(31) 30 Mesonotum mainly testaceous 15. Ixvigatus, U&iz, 



(30) 31 Mesonotum entirely black. 



(33) 32 Tarsi broadly explanate, spatuliforra 36. bari/pus, UavBh, 



(32) 33 Tarsi normal. 



(39) 34 Abdominal segments centrally testaceous. 



(36) 35 Coxaj red 16. mediator, ^oes, 



(35) 36 Coxse mainly black. 



(38) 37 Femora and tibiae entirely testaceous 18. fuscicoxis, Wesm. 



(37) 38 Femora and tibise infuscate 17. vectemis, Marsh. 



(34) 39 Abdominal segments centrally black. 



(41) 40 Abdomen with more than thi*ee basal segments laterally testaceous... 



19. tornator, Marsh. 



(40) 41 Abdomen black, at most with three basal segments laterally pale. 



(43) 42 Second segment with only a lateral gutta 20. guttiger, Wesm. 



(42) 43 Second segment with no lateral gutta. 



(45) 44 Metanotum carinate throughout 21. satanas,^e&m, 



(44) 45 Metanotum not carinate throughout. 



(49) 46 Femora testaceous. 



(48) 47 Terebra shorter than half abdomen ( c? unknown)... 



22. fraudator, Marsh. 



(47) 48 Terebra two-thirds of the length of abdomen ...23. epitriptus, Marsh. 



(46) 49 Femora black. 



(51) 50 Second segment basally rugose 24. larvicida, Wesm. 



(50) 51 Second segment entirely rugose 25. prxtermissus, Marsh. 



(1) 52 Abdomen entirely smooth dorsally. 



(54) 53 Second abcissa of radius shorter than Ist transverse cubital nervure ... 



10. brevicorniSi Wesm. 

 (53) 54 Second abcissa of radius longer than 1st transverse cubital. 

 (56) 55 Vertex subcubical 29. caudaius, R&tz. 



(55) 56 Vertex normal. 



