6 E. T. CRES80N. 



3. Honey-yellow; head yellowisli ; the tuhercnlated crests at base of second seg- 



ment of abdomen prominent and hlack 1. deii(icula.t» Sm. 



Head and abdomen, except first segment, black ; base of second segment with 

 two groups of tubercles divided by a short longitudinal white pubes- 

 cent line 2. cornigera Cress. 



4. Second segment of abdomen at base above with two elevated, oblique, denta- 



ted crests; this segment honey-yellow above with a black x-shaped 

 mark covering the crests and confluent posteriorly on apical margin ; 

 metathorax densely clothed with pale golden pubescence, lateral mar- 

 gins with small short teeth -3. deciissata Cress. 



Second segment above black, with a triangular patch of depressed tubercles on 

 each side at base, a ferruginous spot between these and a large rounded 

 spot of same color on each side posteriorly, separated by a slender 

 black line; metathorax black, the lateral margins with large acute 

 teeth, directed backward ; spine at tip of posterior tibiae long and 

 thickened at base 4. iraciinda Cress. 



5. Thorax more or less ferruginous or yellowish 6. 



Thorax black, ornamented more or less with pale pubescence, rarely entirely 



black 20. 



6. First segment of abdomen broadly dilated at apex and conforming in outline 



with base of second segment ; eyes ovate, depressed, distinctly netted..?. 

 First segment narrow, subquadrate, not or but slightly dilated at apex- • • -15. 



7. Thorax broad, subquadrate, not narrowed niedially, the disk only red ', abdo- 



men black, with two silvery pubescent stripes, interrupted at apex of 



second segment by a silvery band 5. sediicta Cress. 



Thorax rather narrow, elongate, subcompressed, slightly narrow'ed medially, 



almost entirely ferruginous 8. 



Thorax short, fiddle-shaped, being more or less deeply constricted laterally 



before metathorax ; eyes rounded, very convex, polished 9. 



8. Abdomen black above, with two slender silvery pubescent stripes, interrupted 



by a narrow silvery band at apex of second segment. 



6. phalerafa Klug. 

 Abdomen with two silvery stripes, each of which is dilated into a sjiot at apex 

 of second segment, before which the stripes are narrowed and subiu- 

 terrupted ; first segment, venter and base of antenuie ferruginous. 



7. exclainatioiii!>i Cress. 



9. Abdomen black above, with a central silvery pubescent stripe from base to 



apex, and a triangular silvery spot on each side of second segment. 



8. dividiia Cress. 



Abdomen black above, with a more or less distinct silvery hand on second seg- 

 ment; head and legs black or brown ; thorax entirely red 10. 



Abdomen with second segment above black or fuscous, with two pale spots. .11. 



10. Head above with an arcuate silvery pubescent band ; apical margin of abdo- 



minal segments fringed with silvery pubescence ; no red color on sec- 

 ond segment. 9. crediila Cress. 



Head above entii-ely black, the pale band on second segment of abdomen nar- 

 rowed medially and red beneath the pale pubescence; a broad band of 

 pale golden or silvery pubescence on segments 3-5. 



10. crepera Cress. 



