232 



HYMENOPTERA ACUL ATA. 



flexed at the apex ; ? , apical fringe 

 and scopoe dull brown 



(ti) 49. Hairs on tlie disc of mesonotum black ; 

 (J with the pale pubescent abdo- 

 mioal bands very narrow 



(11) 50. $, labrum with the tubercle trans- 

 verse, simi^le ; $ , scopas bright 

 fulvous. 



(52) 51. Both sexes with the hairs of the face 

 fulvous 



(51) 52. Both sexes with the hairs of the face 

 white ...... 



(10) 53. Head of (J twice as wide as mesonotum 

 between the wings ; ? , mandibles 

 widely membranous beneath. 



(55) 54. TibiiB entirely clear testaceous in both 

 sexes 



(54) 55. Tibife pale only at the apex in the $ ; 

 black in the $ .... 



(15) 56. Abdomen not densely hairy, pubescent 

 bands narrow, neai-ly always more 

 or less interrupted; anal fringe 

 nearly always golden in the ? , 

 mandibles not widely membranous 

 beneath ; (J clypeus often white. 



(02) 57. Abdomen more or less red or pale, or 

 species very large with smoky wings. 



(59) 58. Species very large, wings smoky . 



(58) 59. Species smaller, wings clear. 



(01) 60. Abdomen testaceous or brown, seg- 

 ments with paler apical margins 



(00) 61. Abdomen black, with a broad, red 

 band 



(57) 62. Abdomen entirely black rarely with 

 slightly piceous margins. 



(78) 63. Abdomen polished and shining. 



(67) 64. Legs entirely black in both sexes, 

 cly peue black. $ , abdominal bands 

 entire. 



(66) 05. Abdomen distinctly punctured 



(65) 60. Abdomen not punctured 



(04) 67. Tibiaj or tar.si more or less pale, or 

 abdominal bands widely inter- 

 rupted. 



(76) 68. (5', clypeus white, or if black then with 

 distinct white lateral lines of pu- 

 bescence on the apices of the second 

 and following segments. 



(72) 69. (J, clypeus white and tarsi testaceous ; 

 '^ , tibi;B testaceous. 



(71) 70. c?,apex of tibife, at least, testaceous ; 

 5 , wings brownish with pale yellow 

 nervures 



DENTICULATA. 



FULVICRUS. 

 PASCIATA. 



PEROX. 

 BUCEPHALA. 



HaTTORFIANA. 



Cetii. 



CINGULATA. 



AUGENTATA. 

 ALBICRUS. 



CnRTSOSCELES. 



