236 WILLIAM J. FOX. 



18. First abdominal sesment, viewed from the side, distinctly nodose 20. 



First abdominal segment shorter and broader, not distinctly nodose 19. 



19. First se.fiment with tolerably strong, even punctures, the punctuation of second 



dorsal rather subtile ; segment 2 above and beneath reddish. Length 



15 mm fenestrate Lep. 



First segment with large, coarse punctures, the punctuation of second dorsal 

 strong and separated ; second segment red above only. Length 10 mm. 



»;;enor n. pp. 



20. Entirely black ; pubescence grayish ; wings subfuscous gibbosa. Say. 



Abdomen more or less reddish 21. 



21. Second dorsal segment with black pubescence, at least on basal half, pale yel- 



lowish on apical portion in one species 22. 



Second dorsal segment with rather long, yellowish pubescence, except at ex- 

 treme base, entirely reddish or red above only iiiaera Cress. 



22. Punctuation of first dorsal segment unusually coarse and irregular, the pubes- 



cence of second black throughout. Length about 9 mm -oaiiella Blake. 

 Punctuation of first segment strong, but rather even and separated, the pu- 

 bescence of apical portion of second yellowish. Length 12 mm. or 

 over eastor Blake. 



23. Head and thorax rather densely clothed with grayish pubescence 24. 



Head and thorax not densely clothed with grayish pubescence 26. 



24. First abdominal segment strongly nodose 25. 



First abdominal segment hardly nodose, shorter and broader (ventrals 2 and 



3 fringed with pale pubescence at apex) inonticola Cress. 



25. First abdominal segment nearly twice as long as broad, very much nodose; 



segments 3, 4 and 7 with pale pubescence apicalata Blake. 



First abdominal segment shorter and broader, not nearly as nodose ; abdomen 

 with long black hairs, except on the apical segment. 



ob<$ciira Blake, var. 



26. Apical margin of the segments, at least dorsally, with black pubescence, that 



of segments 1 and 2 grayish, or varying to black. . . -obscura Blake. 

 Apical margin of the segments with pale pubescence, both above and be- 

 neath ; pubescence of head and thorax mixed gray and black, the 

 latter predominating, that of abdominal segments 1 and 2 black. 



ISnoworuin Ckll. and Fox. 



27. Head as usual, not as wide as thorax 28. 



Head large, fully as wide as thorax ; head, thorax and abdomen from apical 



ptirtion of segment 2 with pale yellow or fulvous brown pubescence. 



aureola Cress. 



28. Head, thorax and abdomen above with fulvous or reddish pubescence- • ■ -29. 

 Head and thorax with black pubescence above, the abdomen above from 



apical half of segment 2 with reddish pubescence, the ground color 

 black gorgon Blake. 



29. Abdomen, except pubescence, entirely or in greater part black. . . 30. 



Abdomen, except segment 1, reddish, with pubescence of the same color ; carina 



of first ventral segment prominently pioduced anteriorly. .Foxi Ckll. 



30. Pubescence of head, thorax and abdomen above, from apical half of second 



segment, fulvous; the ground color beneath this pubescence appar- 

 ently black fiilvohirta Cress. 



Pubescence of bead, thorax and abdomen above, from apical half of second 

 segment, carmine; the ground color beneath this pubescence reddish. 



Townsendi Ckll. 



