32 A REVISION OF THE NEARCTIC SCIOMYZIDAE 



in comparison with tiie other genera it (Uft'ers in like manner. 

 Dryomyza, on the other hand, seems to be more closely related to 

 Sciomyza than does this genus. 



In various references to this ciliation, there has evidently 

 been some confusion. Rondani considered the auxiliary vein 

 the first, so that his second is our fii'st. Loew* is evidently in 

 error in stating that the third longitudinal vein is ciliate, which 

 is not the case. 



Genotype. — Dryomyza anUis Fallen. 



Our species may be separated by the following table: 



Tarsi and abdomen black ; arista pubescent f umida 



Tarsi and abdomen pale. 



Arista bare; cross- veins clouded anilis 



Arista plumose; cross- veins not at all or faintly clouded simplex 



Neuroctena anilis Fallen (PI. II, fig. 20.) 



1S20. Dri/oini/za anilis Fallen, Dipt. Suec, ii, Scit)in., 16. 



1S68. Neuroctena anilis Rondani, Atti Soc. Ital. Sci. Nat., xi, 56. 



1881. Dryomyza -pallida Day, Can. Ent., xiii, 89. 



9 , cT. Yellow to tawny; mesonotum and abdominal segments sometimes 

 dark. Pile of occiput, pleura, pectus, venter, femora below, long and pale. 

 Arista base pale. Other pile, setulae and bristles, black. Wings yellowish- 

 hyaline with cross- veins distinctly clouded. 



Head subspherical, broader than high. Eyes round, bare. Frons quad- 

 rate, setulose anteriorly, with jirominent margin; areas hardly differentiated; 

 inner and outer verticals divergent and reclinate; post-verticals divergent, 

 situated behind the anterior ocellus; two to three laterally inclined frontals. 

 Face much sunken, so that the antennae are, generally, partly concealed by 

 the overhanging frontal margin; profile concaved, retreating, with very promi- 

 nent epistoma; parafacialia bare, broad. Cheeks broad, bare except lower 

 part; occiput convex, pilose. Clypeus well developed. Palpi cylindrical, 

 pilose; proboscis fleshy. Antennae pendent, situated above center line of 

 eyes; second joint short, triangular, setulose, with a long hair above; third 

 joint longer than broad; arista long, bare, or with few hairs near base. 



Thorax quadrate; mesonotum convex, short pilose. One pair of prescutcl- 

 lars, two dorscoentrals, sometimes a bristle laterad of the first dorsocentral, 

 one supra-alar, one presutural, one humeral, two notopleurals, one peopleural, 

 one to three sternopleurals generally hair-like, sometimes strong, but always 

 weaker than usual with other species. Meso- and pteropleura bare. Scutel- 

 lum convex, with four bristles. Abdomen ovate, slender, pilose. Legs 

 simple, with pilose femora; fore and hind tibiae with preapicals hair-like; 

 middle tibiae bristly on posterior surfaces and at apices, their tarsi with 

 lateral ai)ical bristles; claws curved; pulvilli disliiict . \\'iiigs long; first vein 



''Monogra})!), i, j). 128, 



