LIMOSINA. 177 



Glossy-black, nearly glabrous. Fore margin of the front and sides 

 of the face testaceous. Frontalia almost bare, narrow, dull black. 

 Arista very slightly pubescent. Scutellum flat, semicircular, with mi- 

 nute terminal bristles. Wings hyaline; veins brown; middle of the 

 costal blackish ; praebrachial transverse vein a little above the middle 

 of the discal areolet. Segments of the abdomen nearly equal. Legs 

 rather short, almost bare ; fore femora thick and shining ; extreme 

 base of the tibiae, in general also the fore coxae and the base of the 

 middle tarsi, pale testaceous ; second joint of the hind tarsi not dilated. 

 Male. Fore metatarsus not unguiculate. 



Generally distributed. (E. S. I.) 



10. pedestris, Meig. Zw. vi. 209. 30 (1830); Mcq. ; Hal. ; Zett. 

 Niger, opacus, alls halteribusque brevissimis. Long. 1^-1 J lin. 



Dull-black, hairy. Arista pubescent. Scutellum very obtusely tri- 

 angular. Wings shorter than the thorax ; discal transverse vein falling 

 on the margin, and forming a continuation of the costal vein. Hal- 

 teres abortive, dusky. Abdomen of the male short, clavate; second 

 segment very large, with a longitudinal line ; following segments very 

 short, the last large. Legs long, hairy ; femora thick, especially the 

 fore pair; hind tibiae with a curved spur; second joint of the tarsi 

 twice as long as the first, not thickened. Male. Fore metatarsus un- 

 guiculate. 



Not common. (E.) 



Genus III. LIMOSINA. 



LIMOSINA, Mcq. D. ii. 571 (1835) ; Hal. ; Zett. Borborus A e, Meig. 

 Mycetia et Nerea, Desv. 



Arista pubescens, basi geniculata. Areola analis incompleta. Vena 

 transverse approximates ; vena prabrachialis et pobracJiialis abbreviate . 

 Front bristly. Arista pubescent ; first joint a little elongated. Scu- 

 tellum large, flat, with long bristles. Costal vein of the wing often 

 bristly at the base; radial distant from the tip ; prcebrachial and pobra- 

 chial vanishing before the discal transverse vein, which is remote from the 

 border ; no anal areolet, nor any complete one above the discal. Middle 

 legs elongated, the tibiae usually with lateral spines or bristles ; no spur 

 at the end of the hind tibia. 

 a. Antennae obliquely porrect. 



b. Disc of the scutellum smooth, bare. 



c. Male having the fourth abdominal segment furnished at each 



angle with a long curved tuft of hair. Species 1. 

 c c. Fourth abdominal segment bare. 



d. Halteres black, with a whitish head. Species 2, 3. 

 d d. Halteres of one colour, or paler at the base. Sp. 4-15. 

 VOL. ii. 2 A 



