No. 1774. THORAX OF HYMEN0PTERA—8N0DGRAS8. 91 



Plate 14. 



Fig. 61. Pepsis formosa (Ceropalidae, formerly Pompillidse), thorax and base of abdo- 

 men. 



62. Pogonomyrmex transversum (Formicidae), thorax and base of abdomen. 



63. Apis melli/era (Apidae), thorax and base of abdomen. 



Plate 15. 



Fig. 64. Itycorsia discolor (Pamphiliidse), base of front wing. 



65. Sirex fiavicornis (Siricidse), base of anterior half of front wing. 



66. Tremex columba (Siricidae), base of front wing. 



67. Megarhyssa lunator (Ichneumonidse), base of first wing. 



68. Leucospis affinis (Chalcidoidea), base of front wing. 



69. Pepsis, sp. (Ceropalidse), base of anterior half of front wing. 



70. Apis melli/era (Apidx), base of front wing. 



71. Tremex columba, base of hind wing. 



72. Apis melli/era, base of hind wing. 



73. Leucospis affiyiis, base of hind wing. 



Plate 16. 



Fig. 74. Sirex flavicornis (Siricidas), front wing, veins named according to Comstock- 

 Needham system. 



75. The same, veins named according to Cressonian system. 



76. Megarhyssa lunator (Ichneumonidse), front wing. 



77. Leucospis affinis (Chalcididae), front wing. 



