338 APPENDIX. 



9 Head with rather long, silvery hair; thorax and scu- 

 iel with remote punctures, the former with a very slight 

 appearance of longitudinal lines before, the latter with a 

 longitudinal, impressed line at tip; mctathorax with dense, 

 dilated punctures; wings hyaline, Avith a broad, dusky tip, 

 nervures black; tarsi piceous; abdomen polished, imma- 

 culate. 



Length less than half an inch. 



OXYBELUS, Latr. 



0. 4-notatus. Black; tergum with a slight, whitish, ab- 

 breviated line on each side of the first and second seg- 

 ments. 



Inhabits Pennsylvania. 



AntennsR towards the tip beneath, stethidixmi^ immacu- 

 late; wings hyaline, nervures brown; nietathorax and sou- 

 tel each with three raised lines, two superior spines of the 

 former whitish at tip, decurved; inferior spine larger, 

 black; tarsi testaceous at tip ; anterior tibiae testaceous on 

 the inner side; tergum polished; lateral abbreviated line 

 of the first segment much more distinct than that of the 

 second. 



Length nearly one-fourth of an inch. 



GORYTES, Latr. 



G. bipunctatus. Black, collar and scutel with a white 

 line; tergum with two white spots. 



Inhabits Pennsylvania. 



Hypostoma silvery white ; basal joint of the antennss 

 before, exterior base of the mandibles and palpi, white ; 

 line of the collar capillary, of the scutel broader, abbrevi- 



