28 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 68 



Plate 4 



llj'popygial characters of Brachycistis, Cyphotes, and Myrmosa males 



Fig. 52. Brachycistis ampla, hypopygium, left side dorsal, left ventral. 



53. Brachycistis atrata, same. 



54. Brachycistina acuta, hypopj'gium, side view. 



55. Brachycistina acuta, same, dorsal view, one half. 



56. Brachycislellus inermis, same. 



57. Brachycistellus inermis, same, side view. 



58. Cyphotes melaniceps, same. 



59. Cyphotes melaniceps, same, left side ventral view, right side dorsal. 



60. Cyphotes- melaniceps, seventh and eighth ventral segments of abdomen 



from below. 



61. Myrmosa unicolor, hypopygium, left side ventral view, right side dorsal. 



62. Myrmosa unicolor, 7th and 8th ventral segments of abdomen from 



below. 



o 



