PKOMACHUS. 195 



description of P. fuscipennis, Bellardi, $ . The type of the male, which I have seen 

 in Turin, is a different species (hairs on face differently coloured, shadow in submarginal 

 cell present, &c). The type of the female I have not seen, as it is not in Turin, but in 

 the collection of Bigot, to whom Prof. Bellardi communicated the male for the sake of 

 its comparison with the type of P. fuscipennis, Macq. (Dipt. Exot. Suppl. i. p. 81). 

 Bigot concluded that both sexes belonged to P. fuscipennis, Macq. : an error must 

 have occurred here ; it is evident from Prof. Bellardi's description that the male and 

 female of his P. fuscipennis belonged to different species, and it results from a compa- 

 rison of Macquart's description of the male with Bellardi's that they also refer to two 

 different species (as Bellardi himself correctly suspected). Besides the differences noted 

 by Bellardi (colour of palpi, &c), Macquart mentions merely " white hairs on the 

 posterior margins of the segments," and not the greyish pollinose cross-bands that exist 

 in Bellardi's type. 



The male specimens from South America, which Schiner (Eeise d. Novara, Zool. ii. 

 Abth. 1, p. 177) refers to P. fuscipennis, Macq., seem again to belong to a different 

 species. 



5. Promachus ? 



Male. Legs black, beset with yellowish hairs. "Wings with a moderate brownish tinge, more saturate at the 

 apex ; veins more slender than in P. anceps, not clouded with brown ; no grey shadow in the submarginal 

 cell. Scutellum and basal segments of the abdomen beset with golden-yellow, soft, erect hair. Male 

 forceps small ; valves slender ; black. 



Hah. British Honduras, R. Sarstoon (Blancaneaux). 



A single specimen, on both wings of which there are two cross-veins between the 

 third vein and the fork of the second ; this may be merely adventitious. 



6. Promachus albifacies. 



Promachus albifacies, Williston, Trans. Am. Ent. Soc. xii. p. 63 ( <$ ? ) \ 



Face clothed with thick, whitish (slightly yellowish) hair ; some black bristles along the oral margin ; the hair 

 on the cheeks and front coxae thick and snow-white ; black bristles on the upper part of the occiput and 

 on the palpi ; antennas black, the third joint rather alternate before the bristle. Thorax : general colour 

 of the dorsum brownish-grey : the dorso-central region occupied by alternate grey, brownish-yellow, and 

 darker brown stripes, and bounded on each side by a line which, where it crosses the suture, has a distinct 

 whitish reflection ; the lateral regions of the dorsum occupied by an oval, faintly shining, greyish spot, 

 bisected by the suture ; pleurae brownish ; the front, the pleurae, and the scutellum beset with scattered 

 white hairs, in addition to the usual short black bristles and macrochaetae ; a characteristic tuft of white 

 hairs in front of the scutellum, among the black praescutellar macrochaetae. Abdomen black, moderately 

 shining above ; the sides, as well as the venter, brownish pollinose ; a tuft of white hair on the sides of the 

 first segment ; triangles of white pile in the posterior angles of segments 2-5. Male forceps hidden under 

 a dense covering of silvery hair. The segments forming the ovipositor black, moderately shining. Legs 

 blackish, densely clothed with appressed white pile ; portions of the femora and tibiae reddish (variable 

 in different specimens) ; bristles black ; in the male, the front tarsi have, among the black bristles, a 

 covering of Bhort white hairs, which is not so distinct in the female. Wings with a slight yellowish 



2c 2 



