or PHILADELPHIA. 353 



BERIS. 



B. FUSCiTARSis nob. — When describing this species I observed 

 that " The scutel of my specimen is wanting, I cannot therefore 

 ascertain its number of spines." I have since obtained individu- 

 als in Indiana, and find that the scutel is altogether destitute of 

 spines or radii. It diflFers in this respect from all the known 

 species. 



XYLOPHAGUS Meig. 



X. FASCIATUS. — Wings dusky, fasciated ; abdomen fasciated. 



Inhabits Indiana. 



Body dusky : thorax posterior portion honey-yellow : 



[156] poisers blackish at tip: wings dusky, a more distinct 

 bami on the middle and at tip : feet honey-yellow ; hind tibia 

 blackish : tergura yellow, basal half of the four basal segments 

 black; remaining segments nearly all black. 



Length over two-fifths of an inch. 



By an accident the head and anterior part of the thorax of this 

 fine specimen were destroyed, but the above description will 

 sufficiently indicate the species. The wing nervures resemble 

 - those of the maculatus Fabr. 



THEREVA Latr. 



T. ALBIFRONS. — Black, with gray hair : thorax with a black- 

 ish vitta. 



Inhabits Indiana. 



Body black, with numerous gray hairs : front silvery : an- 

 tennae — : rostrum dirty honey-yellow : thorax with a broad 



fuscous vitta : wings hyaline : poisers black at tip : tergum with 

 the segments tipped with a more dense margin of gray hairs, 

 wider and more obvious on the sides : venter, the two middle 

 segments with a pale terminal margin : feet blackish ; tibise 

 dirty honey-yellow. 



Length % three-tenths of an inch. 



Resembles //-(w^a/w nob., but is much smaller. 



ANTHRAX. 



A. EmxiTiA. — Black, with fulvous hair : wings fuscous at 

 base. [157] 



Inhabits 



1829.] 23 



