718 BOSTON JOURNAL 



FIGITE8 Latr. 



(Antennre monili^orm, thicker towards their extremities. Second 

 cubital cellule wanting.) 



1. F. IMPATIENS. — Black : uumdibles and feet piceous. 

 Inhabits Indiana. 



9 Body polished black : antcnnse piccous-black, two-thirds the 

 length of the body, with scattered hairs : beyond the sixth joint 

 moniliform : terminal joint ovate conic : mandibles piceous : area 

 of the stemmata a little elevated : behind which, on the occiput, 

 are oblique impressed lines : scutel with the margin depressed 

 and rugose, the disk oval, the edge obscurely piceous, with an 

 indentation behind, within the edge: wings hyaline: nervures 

 yellowish : feet piceous. 



Length three-twentieths of an inch. [269] 



I am by no means satisfied with the only essential characters I 



can find of the genera DipMrpi's and FiijUns. The present sj^e- 



cies closely resembles the Dijj/olrj)is imj>atlcns nob. The scutel 



has an indentation as in scufeUaris Latr., and some other species. 



2. F. MELLIPES. — Black; feet honey-yellow ; wings ciliate. 

 Inhabits Indiana. 



5 Body black, polished : mouth piceous : antennae a little 

 liairy, piceous : wings hairy and ciliate j more particularly ciliate 

 at tip ; nervures piceous : feet honey-yellow, somewhat paler at 

 base and including the coxae. 



Length one-twenty-fifth of an inch. 



LEUCOSPIS Fabr. 



L. FRATERNA 9 . — Black, varied with yellow ; oviduct longer 

 than the abdomen. 



Inhabits Indiana. 



Body black, densely punctured : head with an obscure silvery 

 reflection before and on the front in the cavity of the antennae 

 bright green : vertex varied with obscure violet and greenish : 

 antennae, basal joint yellow anteriorly : collar margined each side 

 and behind with yellow and with a yellow transverse abbreviated 

 line on the anterior middle : thorax with an abbreviated line 

 over the wings and a transverse one on the scutel yellow : wings 



[Vol. I. 



