I. STRATIOMYID.E 



51 



I. STRATIOMYIDiE. 



Fio. 70.- — Straiiomiis pntamidii 9- 5< S. 



Orthorrhaphous brachyceroiis eremochfetous flies of rather large to 

 rather small size, which have the flagelluni of the antennae anniilated, 

 the tibite without spurs (with rare exceptions), tlie ambient vein a])sent 

 (except to a partial extent in Xylomyinm), and the squamae inconspicuous. 



Head short, hemispherical or flattened, as broad as the thorax, and absolutely 

 without any sign of bristles. Face ranging from the soft arch of Stratiomys (fig. 71) 



to the produced polished snout of Nemotelus 

 (fig. 72), not retreating below the antennae, 

 sometimes uniformly pubescent ov bare 

 and sometimes only the eye-margins bear- 



Fio. 72. — Xfinoteliif iiifirinns <} . x 30. 



ing fine ]uibescence ; jowls small but con- 

 tinuous from the face to the back of the 

 head ; back of the head usually rather 

 inflated, at least on the lower part, and 

 often showing (especially in the female) a 

 ribband of pale colour against the eyes ; 

 vertex slightly raised, and the three ocelli 

 always clearly distinct. Proboscis fleshy, 

 sometimes rudimentary, but never elongated nor adapted for biting. Palpi not 

 conspicuous, one- to three-jointed. Eyes of the male usually contiguous on the 

 frons, luit of the female widely separated ; when the eyes are hairy m the male they 



Fio. 71. — Stratiomys potamida 9- xll. 



