380 



Say^s Descriptions of 



$ Hypostoma, silvery : nasus rounded : antenn(B annu- 

 late, one half of each joint being yellowish. 

 ^ Length over three twentieths of an inch. 



Alyson^ Jur. 



tergu 



• 



F ' 



1. A. oppositus. Black; feet honey-yellow ; 

 with two yellow spots. 

 Inhab. Indiana. 



5 Bodt/ black: mouth, hypostoma and anterior orbits 

 yellow : antenna at base beneath yellow : thorax with 

 an obsolete yellow spot before the wings each side : wings 

 very slightly tinted with dusky, more particularly in an 

 obsolete band towards the tip : nervures fuscous : stigma 

 brown : recurrent nervures entering the petiolated cellule 

 exactly opposite to its bounding nervures : supines very 

 short : feet honey-yellow : tergum polished ; first segment 

 honey-yellow; second segment with a large, lobately- 

 rounded, bright yellow spot each side at base j the base 

 Is also obsoletely honey-yellow. 



<J Antenna, terminal joint as long as the first, arcuat- 

 ed : wings not distinctly tinted with dusky except in the 

 radial cellule : abdomen, with the exception of the two 

 yellow spots, black : tarsi paler than the tibi® and thighs. 

 Var. a. Yellow spots of the tergum obsolete. 

 Length three tenths of an inch. 



In form, size an 

 (PoMPiLus,) Panz 

 blackish, &tc. 



2. A. melleus. 

 tip of the abdomen black. 



But in that species the feet are 

 9 Honey-yellow ; head, pectus, and 



iiana 



Thorax 



