340 DIPTERA OP NORTH AMERICA. [PART IV. 



I 1 ?. Goniomyia blanda 0. S. ; forceps from above and open. 

 IS. G-omiOHiyia cognatella 0. S. ; half the forceps, from above. 



19. Gnoplaomyia tristissima 0. S. ; forceps from above, half open. 



19a. ovipositor of the same species. 



20. Erioptera vespertina 0. S. ; half the forceps. 



21. Symplecta punctipennis M. ; forceps from above ; a and 6 are 



horny. 



22. Cladura flavoferruginea 0. S. ; forceps from the side ; a is con- 



vex, and seems to be horny inside ; c is the forceps. 



23. L-imiaopllila Aprilina 0. S. ; forceps from above ; tbe outer 



horny appendages have a longitudinal notch, represented on fig. 

 23a. 



24. Limnopllila ultima 0. S. ; forceps from below. 



25. liimnopliila luteipennis 0. S. ; forceps from above ; aa. mova- 



ble appendages ; the outer ones horny. 



26. Liimaopliila (DactylolaMs) Montana 0. S. ; forceps from 



above, closed (it is distinguished at once by the position of the 

 appendages). 



26a. the same, from the side ; a. inner horny points, protruding 

 when the forceps is opened. 



2^. Llmnopliila (Prionolabis) rufibasis 0. S. ; forceps from 

 above, open ; aa. large, strong appendages, serrated on the inside ; 

 bb. also horny, figured separately, 27a. 



276 is a slender, horny organ, which protrudes, when the forceps is 

 opened ; otherwise it is concealed. 



2S. Eriocera fuliginosa 0. S. ; forceps from above ; aa are horny ; 

 bb soft ; c is curved downwards, like fig. 276. 



29. Eriocera (Arrlaenica) spinosa 0. S. ; forceps from above ; a. 



horny, 6. soft appendages ; cc. internal clutching apparatus ; the 

 latter is figured separately, fig. 29a ; at a 1 is a joint, by means of 

 which it is moved. 



30. Amalopis inconstans 0. S. ; forceps from above, and half open ; 



it is difficult to convey a correct idea of it in a drawing - f the horny 

 points,/, g, h, are all curved upwards ; the point/is bifid (fig. 30a), 

 66 are soft ; cc hollow inside ; h is figured separately at 306. 



31. Bittacoiliorplia clavipes F. ; forceps from below. 



31a. the same, from above. 



