256 LAWRENCE BRUNER. 



218. Pubescence darker, on cheeks, top of head and thorax, above dull fulvous. 



Fimbria brownish beulaheusis Vier. 



Pubescence lighter, whitish, yellowish or pale ochraceous 219. 



219. Triangle at base of thorax finely roughened or granulated 220. 



Triangle at base of thorax rather strongly reticulated or longitudinally pli- 

 cate or rugose 



220. Pubescence on head and thorax grayish yellow. Tips of segments testa- 



ceous. Fimbria fulvous frigida Sm. 



Pubescence on head and thorax white or dull white, without the yellowish 

 tinge 221. 



221. Wings yellowish, nervures brownish, the stigma deep honey yellow. Seg- 



ments 1-4 with broad but very thin apical fasciae of dull white hairs. 



apacbeorum var. a Ckll. 

 Wings smoky or smoky hyaline 222. 



222. These members hyaline 223. 



These members more or less smoky 224. 



223. Nervures and stigma dull testaceous. Head broader than thorax ; cheeks 



broad and rounded. Abdominal fasciae thin, narrow, whitish, com- 

 plete geranii mac ulata Rob. 



Nervures and stigma dark brown. Head normal. Abdominal fascife on 

 segment 1 almost obsolete segregans Ckll. 



224. Wings faintly clouded apically. Abdominal fasciae interrupted on segments 



1 and 2 simplex Sm. 



Wings not clouded. Abdominal fasciae on 1 only interrupted. 



solidaginis Rob. 



225. Inclosure with its surface reticulated. Head large, broader than thorax, 



the cheeks strongly and broadly produced behind the eyes, bordered 



by a rim plalyparia Rob. 



Inclosure with its surface longitudinally ridged, plicate or striate 226. 



226. Pubescence rather long, quite abundant on head and thorax 227. 



Pubescence sparse, the thorax above nearly bare. Abdominal segments 



with apical margins narrowly testaceous and with fasciae of white 

 hairs on 2-4 228. 



227. Apical margins of abdominal segments 2-4 fringed with white pubescence, 



anal fimbria slightly fulvous algida Sm. 



Apical margins of abdominal segments 1-4 fringed rather broadly with dirty 

 white pubescence. Fimbria inclining to fuscous erigena* Rob. 



228. Clypeus smooth, shining and impunctate, except on the sides. Mesothorax 



with scarcely a trace of punctures bipunctata Cress. 



Clypeus minutely tessellate and dull all over, with rather sparse shallow 

 punctures. Mesothorax with distinct though shallow and rather 



sparse punctures liartfordensis Ckll. 



229.* The prevailing color of entire insect blue or greenish 230. 



The prevailing color black, but in some instances the abdomen may be more 



or less ferruginous 231. 



230. Steel-blue, sometimes tinged with dark green ; the pubescence mostly pale, 

 male and female ehalyba»a Cress. 



This section, as represented in the present table, undoubtedly contains forms 

 that should be referred elsewhere. 



