746 BOSTON JOURNAL 



7. p. MELLIPES. — Black ; feet yellowish rufous. 

 Inhabits Indiana. 



9 Body black, somewhat sericeous with silvery hairs ; anten- 

 nae, joints long, distinct ; mandibles piceous at tip : [305] palpi 

 whitish : wings hyaline ; third cubital cellule very little con- 

 tracted before, larger than the second ; first recurrent nervure 

 entering the second cellule at the middle ; basal series of trans- 

 verse nervures dislocated ; feet bright honey-yellow, the coxae 

 only black. 



Length over two-fifths of an inch. 



8. P. (Miscus) coRNicus [coNicus]. — Black ; wings a little 

 dusky ; basal line of transverse nervures widely dislocated by the 

 externo-medial nervure. 



Inhabits Indiana. 



9 Body black, immaculate ; wings dusky ; nervures blackish ; 

 second cubital cellule somewhat conic, the anterior basal nervure 

 entering the radial cellule in a much arcuated direction, so as not 

 to form an angle with it ; third cubital cellule not much con- 

 tracted anteriorly ; basal series of transverse nervures widely dis- 

 located, that portion which is between the externo-medial and 

 anal nervures is equal to the length of the dislocation ; abdomen 

 polished ; mandibles at tip piceous. 



Length less than one-fifth of an inch. 



% Wings less obscure ; anterior tibiae and tarsi obsoletely dull 

 yellowish. 



Length one-fourth of an inch. 



9. P. (MISCUS) PETIOLATUS. — Tergum fulvous near the base; 

 third cubital cellule petiolated. 



Inhabits Indiana. 



5 Body black, a little sericeous : wings blackish ; third cubi- 

 tal cellule decidedly petiolated : tergum with the terminal half 

 of the first segment, and the greater portion of the second seg- 

 ment yellowish-fulvous. 



Length over two-fifths of an inch. 



The petiolated character of the third cubital cellule resembles 

 that of P. nigcr Fabr, The basal series of transverse nervures is 

 distinctly dislocated. [306] 



[Vol. I. 



