Dij>iera of St. Vincent (West Indies). 430 



BIPPOBOSCID^.* 



Ornithomyia. 

 Latreille, Hist. Nat. Crust, et Ins., xiv., 180 k 



1. Ornithomyia erythrocephala. 



? Ornithomyia erythrocejpkalaj Leacii, Eprob. Ins., 13_, 

 pi. xxvii., figs. 4, 5. 



Four specimens which, probably belong to this species. 

 I have only Wiedemann's quotation of Leach's descrip- 

 tion for comparisoD, which does not give the length. The 

 specimens are from nine to ten milUmetres in length, the 

 costal border of the submarginal cell is about two-thirds 

 the length of that of the marginal cell, the second 

 posterior cell is only a little longer than the first, etc. 



SUPPLEMENT, 



EMPIDID^. (See p. 307.) 

 Hemerodromia. 

 Meigen, Syst. Beschr., ii., 1822. 



1. Hemerodromia defessa, n. sp. (PI. XIY., fig. 166, 



wing.) 



(^. Head and thorax shining, deep pitchy black or black, the 

 lower part of the face and the occipital orbits grey pollinose. Eyes 

 broadly contiguous on the face. Antennae light yellow, the third 

 joint as long as the first two together. Bristles of thorax and 

 scutellum wholly inconspicuous. Abdomen opaque black, the venter 

 yellow. Legs light-yellow ; front femora much thickened, a little 

 longer than the coxa, not emarginate for the reception of the tibial 

 spine. Wings nearly hyaline ; anal cell and discal cell wanting ; 

 anterior cross-vein situated a little beyond the middle of the basal 

 cell ; second posterior cell and its petiole of nearly equal length ; no 

 stigma. Proboscis light yellow, shorter than the height of the head. 



Four specimens. The present species is related to 

 H. captus, Coq., but diS'ers in the shining colour of the 

 bead and thorax. 



- By S. W. Williston. 



