26 PROCEEDINGS OF THE NATIONAL MUSEUM vol.68 



BRACHYCISTIS (BRACHYCISTINA) ELEGANTULA (Cockercll and Casad) 



Differs from preceding species as noted in key and also in the 

 following particulars. The clypeiis has a more prominent central 

 elevation, the apical central portion is not so much produced down- 

 ward and in addition the margin is bevelled, with a short but notice- 

 able tooth on each angle of the produced central part. The basal 

 segment of abdomen is distinctly longer than its apical width, and the 

 hypopygium is similar to that of atrata Blake. There are three 

 submarginal cells in the fore wing of all four specimens before me, 

 including one labeled 'Hype," the cross vein from stigma being well 

 before the vein closing third submarginal cell (fig. 5). 



Length, 6-8 mm. 



Originally described from Mesilla Park, N. Mex. I have seen 

 a specimen from Chiricuhua Mountains, Arizona. 



Type.— Cat. No. 2593, U.S.N.M. 



EXI^LANATION OF PLATES 



Plate I 



Details of Brachycistiinae, Psauimocharidae, and Cyphotinae 



Fig. 1. Brachycistis carinata, prothorax of male from side, 

 la. Ceropales texanus, same. 



2. Brachycistis atraia, seventh and eighth abdominal sternites of male from 



below. 



3. Brachycistis atrata, apex of abdomen of male from side, expanded to 



show hypopygium, etc. 



4. Brachycistis ampins, fore wing of male. 



5. Brachycistina elegantulus, same. 

 G. Brachycistis gaudii, same. 



7. Brachycistis carinata, hind wing of male. 



8. Brachycistis washingtona, apex of radius of hind wing, male. 



9. Brachycistis carinata, same. 



10. Cyphotes, species, same. 



11. Mrymosa unicolor, same. 



12. Myrmosa unicolor, cerci of male. 



13. Cyphotes melaniceps, same. 



14. Typhoctes mirahilis, side view of thorax of female. P = prothorax, 



Me = mesothorax, Af< = metathorax and propodeum, A = abdomen, 

 1, 2, 3, fore, mid, and hind coxae. 



15. Cyphotes melaniceps, base of abdomen of male. 



16. Cyphotes species, same, female. 



