40 AMERICAN NEUROPTERA. 



SYMFIIEROBIUS ii. gen. 



Antennae iiioniliforni ; wings entire; subcosta ending in margin; 

 costal area i-ather broad at base, a recurrent vein ; costal cross-veins 

 often branched; two series of gradate veinlets in forewings, the 

 outer of only four veinlets ; only one series (the inneu-) in hind- 

 wings; a cross-vein connecting first radial sector to median vein; 

 the median is usually a little bent toward the cubitus at connecting 

 veinlet; in hiudwings the median usually forks plainly beyond fork- 

 ing of radial sector; usually but two radial sectors. 



Type. — S. amieulus Fitch. 



This genus includes a few European species, among them Hevi. 



elegans Steph. 



SYNOPSIS OF SPECIES. 



1. Venation of forewings entiiejy dark 2. 



Venation of forewings interrupted with pale • -3. 



2. One or two dai'k lines between veins OCCideiitalis. 



Membrane of wing entirely dark iinibral lis. 



3. Longitudinal veins of forewings minutely dotted with brown 4. 



Longitudinal veins of forewings mostly dark, but interrupted by whitish 



spaces angiistus. 



4. Forewings with broad bands on gradate series, and a band nearer base. 



pictus. 

 Forewings do not have both gradate series broadly marked 5. 



5. Costal area narrow at base; no large dark spot on posterior part of inner gra- 



date series reaching to margin of wing; black basal part of ant6nnse 



not sharply terminating perparvus. 



Costal area broader at base; a large dark spot on jiosterior part of inner gra- 

 date series reaching nearly to margin of wing; black basal part of 

 antennae usually sharply defined 6. 



6. Eastern specimens a>iniculiis. 



Western specimens barberi. 



!§iyinpherobius occidenlalis Fitch. — Face shining brown, vertex 

 pale, basal joints of antenuse yellow, beyond for one-third black, rest pale yel- 

 low ; thorax brown, with indication of pale median stripe; abdomen brown; legs 

 pale yellow, femora sometimes iufuscated ; wings with one or two brown lines in 

 each cell, except the costal area, venation brown, the cubitus and basal cross-veins 

 more heavily marked ; apical margin with dark dots. Hindwings rather dusky, 

 venation brown, costal area rather darkei- than elsewhere. Forewings with the 

 costal area rather broad, two radial sectors, first usually connected back to 

 radius, but not to second, the median is but little bent toward cubitus at con- 

 necting veinlet, which is at about same point as veinlet connecting cubitus to 

 anal; cubital cell long, with two branches below, four outer gradate veinlets, 

 often disjoined. Expanse 10 mm. 



Described by Fitch from northern Illinois. I have seen it only 

 from Onaga, Kansas (Crevecoeur). A very distinct species by the 

 dark lines in membrane between veins. 



