58 ^ E. T. CRESSON. 



24. Calcaria black; body above l>lack pubescent; apex of first segmeut of abdo- 



men and band behind second segment pale ochraceous pubescent. 



25. Ciiiba Cress. 

 Calcaria pale 25. 



25. Head and prothorax black pubescent •' 26. 



Head and prothorax pale pubescent 29. 



26. Tibije with black pubescence on outer side, pale on inner ... 27. 



Tihise with the pubescence entirely griseons or white 28. 



Tibiie with the pubescence fulvo-fuscons; abdomen with apex of fir.st seg- 

 ment and narrow band behind second, silvery or white. 



26. 4»i*bana Cress. 



27. First segment of abdomen at apex with a broad band of silvery-white ap- 



pressed pubescence ; a patch of whitish pubescence on each side of 

 metathorax at base above; tubercle beneath tegulfe large, prominent, 

 obtuse; posterior tibise with the pale pubescence on inner side dense 



and long 27. Titliia Klug. 



First segment with long pale hair, and fringed at apex with rather short pale 

 pubescence, but not forming a broad band ; metathorax with .scattered 

 long pale hair; tubercle beneath tegulfe acute; posterior tihise with 

 the pale pubescence on inner side short and sericeous. 



28. loreiia Cress. 



28. Pubescence of head entirely black; ventral segments 2 and 3 fimbriate at 



apex with white pubescence ; wings fuscous, hyaline at base; sides of 

 abdominal segments 1 and 2 at base, and spot at sides of 3, densely 



white pubescent 30. caiieta Cress. 



Pubescence of head in front and on clypeus i)ale; ventral segments 2-4 fim- 

 briate at apex with white pubescence; wings uniformly fuscous; first 

 abdominal segment with long, loose, pale hair; sides of second segment 

 at base, and spot at extreme sides of 3 and 4 pale pubescent. 



29. caxara Cress. 



29. Anterior wing with marginal cell smaller and not longer than second sub- 



marginal ; tubercle beneath tegulie large, prominent and suba(;ute. 



31. alinada Cress. 

 Anterior wing with marginal cell about as long as the first and second sub- 

 marginals combined 30. 



30. Second submargiual cell twice longer than high, pointed at base; pleura ob- 



tusely protuberant beneath tegulae 32. picada Cress. 



Second submai'ginal cell scarcely longer than high, subquadrate, not pointed 

 at base; pleura not protuberant beneath tegulae. . . .33. barra Cress. 



31. Second segment of abdomen above black, with two large smooth pale yellow 



spots ; calcaria black 35. colorata Gerst. 



Second segment above black, more or less ornamented with white pubes- 

 cence 32. 



32. Pleura with a more or less developed tubercle or spine beneath tegulaj. . . .33. 

 Pleura without tubercle or spine beneath tegnlse 36. 



33. Abdomen when viewed from above entirely black behind base of second seg- 



ment ■ 34. 



Abdomen more or less banded with pale pubescence behind second seg- 

 ment 35 



