102 INSECUTOR INSCITI^ MENSTRUUS 



nal joints rufous, third antennal joint and arista black, frontalia 

 brownish-rufous to brown. Thorax and scutellum silvery ; 

 four thoracic vittse, the inner pair linear. Abdomen silvery 

 on last three segments except broad hind borders, the anal seg- 

 ment being rather more than half black. Legs black. Wings 

 clear, bases narrowly tawny. Tegula; white. The pollen of 

 thorax and abdomen has a bluish tint, sometimes shared by 

 that of head. 



Holotype, No. 19618, U. S. Nat. Mus., female, Arlington, 

 Virginia. Allotype, male. 



Torynotachina, new genus. 



Genotype, Torynotachina quinteri Townsend, new species. 



Runs to Coquillett's Hypostena barbata. Differs from 

 Methypostena as follows : Female. Facial profile about as long 

 as frontal. Antennae inserted well above eye-middle. Third 

 antennal joint long, three and one-half times second or about 

 that. Facialia ciliate fully half way up. Ocellars very small, 

 short, weak, vestigial, a still shorter pair behind them. Three 

 reclinate inner orbitals, two proclinate outer; outer vertical 

 well developed. Front at vertex over one-fourth head-width. 

 Arista thickened almost halfway, second joint round and dis- 

 tinct. Frontals descending about to end of second antennal 

 joint. Head length at vibrissse fully four-fifths that at base 

 of antennae. Hindmost postsutural stronger, nearly as strong 

 as the middle supraalar and hind postalar. Two anterior mar- 

 ginal scutellar bristles stronger, discal abdominal bristles much 

 stronger. Apical crossvein not markedly bent in. Apical cell 

 narrowly open, ending just before wingtip. Hind crossvein 

 slightly nearer to apical than to small crossvein. Ovipositor 

 chitinous, about as broad as long, rather spoon-shaped. 



Torynotachina quinteri, new species. 



Length of body, 4.5 to 5.5 mm. ; of wing, 3.75 to 4 mm. Two 

 females. Cabin John Bridge, Maryland, June 7, 1915, on herb- 

 age (G. E. Quinter). 



Black, shining, silvepy-pollinose. Frontalia black. Para- 

 frontals and all of face silvery-white, changing to dark with 

 light incidence. Cheek grooves dark. Occipito-orbits silvery- 



