BY ROWLAND E. TURNER. 75 



a 10 . Hypopygium elongate-triangular. 

 a 11 . Abdomen black with yellow spots 

 on the sides. 

 a 12 . Antennte moderately long. 



a 13 . The anterior angles of the pro- 



notum prominent, crinitus 126 



b 13 . The anterior angles of the pro- 

 notum not prominent. 



immodestus 130 

 6 12 . Antennae short. 



a 13 . First abdominal segment short. 

 a 1 *. The spots on the abdomen 



small vigilans Sm. 112 



b 1 *. The spots enlarged, forming 

 interrupted bands. 



vigilansSm. var. incertus 112 

 b 13 . First abdominal segment long 



and slender. cognatus Sm. 113 



ft 11 . Abdomen ferruginous marked with 

 orange. 

 a 12 . The posterior margin of the pro- 

 notum fulvous. 

 a 13 . The clypeus longer than broad. 



rufiventris Guer. 127 

 6 13 . The clypeus broader than long. 



loallisii Sm. 128 



6 12 . The pronotum entirely black. 



inconstans Sm. 133 

 ft 10 . Hypopygium short and broad. 

 a 11 . The yellow bands on the abdomen 



interrupted senex Sm. 131 



6 11 . The bands orange and not inter- 

 rupted, flavipennis Sm. 134 

 6 8 . Abdomen subconical, truncate at the base. 

 a 9 . Clypeus truncate at the apex. 

 a 10 . Median segment marked with yellow. 



a 11 . Pronotum black. hyalinatus Westw. 137 



6 11 . Pronotum marked with yellow. 



apterus Oliv. 136 

 6 10 . Median segment black, maculosxis Sm. 138 

 b 9 . Clypeus strongly rounded at the apex. 

 a 10 . Hypopygium not truucate at the apex. 



affinis Guer. 140 



