BRAZILIAN MUTILLA. 13 



58. A spot of silvery pubescence on apical middle of abdominal segments 4 and 5 



only ; the two red basal spots on second segment very small and often 



wanting. (See g 52) 61. denii!!«sa Cress. 



A spot of silvery pubescence on apical middle of segments 2 5 .59. 



59. The two smooth spots on posterior part of second segment of abdomen small, 



yellow, generally tranverse, often oblique; the two basal spots often 

 very small, and sometimes wanting. (See § 52). 



60. latevitlata Cress. 

 The two smooth spots large, rounded, blood-red, sometimes almost confluent 

 with the two basal spots, which vary in size, but never minute. 



66. quadruiu Klug. 



60. Thoracic vittse fulvous or dark golden pubescent, almost entire ; spot on ver- 



tex generally small and sometimes wanting. (See § 67). 



67. cliapada Cress. 



Thoracic vittse pale golden, silvery or griseous, confined to metathorax, or 



very slightly extended on mesothorax posteriorly 61. 



61. The silvery pubescent patch on flanks of metathorax broader, extending for- 



ward on pleura; the two spots on posterior part of second abdominal 



segment subquadrate or rounded. 68. crixa Cress. 



The silvery patch narrow and confined to flanks of metathorax; the two 

 spots on posterior part of second segment more or less transverse. 



70. vagabuiida Smith. 



62. The two smooth pale spots on posterior part of second segment square or 



rounded 63. 



The two smooth spots narrow and very transverse 64. 



63. A spot of silvery pubescence on apical middle of abdominal segments 4 and 



5 only 69. coinpar Andre. 



A spot of silvery pubescence on apical middle of segments 2-5. 



71. spectabiliiii Gerst. 



64. Thoracic vittie golden or fulvous pubescent, those on mesothorax broad, 



curved and attenuated anteriorly, almost or quite entire; a silvery- 

 white spot on extreme side of abdominal segments 2 and 3 at apex ; 

 ventral segments 2 and 3 banded at apex with pale pubescence. 



78. seiiiiilala Cress. 

 Thoracic vittse narrow and silvery, extended anteriorly on base of meso- 

 thorax ; a silvery white spot on extreme side of segments 2 4 at apex ; 

 ventral segments 2-4 banded at apex with pale pubescence. 



76. iiidica Linn. 



65. Thoracic vittee not extended forward ou prothorax. 



Thorax notched on each side at about the middle. 

 Mesothoracic vittaj broad, oblique and disconnected at base from the 



slender metathoracic stripes 74. duplicata Gerst. 



Mesothoracic vittse slender, straight and continuous with the meta- 

 thoracic stripes 72. bivittata Gerst. 



Thorax not notched laterally 73. estrella Cress. 



Thoracic vittfB entire ; thorax not notched laterally.... 75. ocellaris Klug. 



66. Head subquadrate, broader than thorax 79. vivala Cress. 



Head not broader than thorax, generally narrow 67. 



67. Thoracic vittte fulvous or dark golden, almost entire; head above often with 



TRANS. AM. ENT. SOC, XXVIII. JANUARY, 1902. 



