388 



Sai/^s Descriptions of 



Length seven tenths of an inch. 



Differs from L. cyanipennis^ F. which it seems to 

 resemble most, in being sraaller^ more polished, having 

 no testaceous at base of the petiole or on the sides of the 

 metathorax ; the wings also are less opake. 



•i 



P0LISTES5 Latr. 



1. P. metrica. Ferruginous; abdomen black; wings 

 dark violaceous. 



Inhab. United States. 



Body ferruginous : anteiincdy fuscous ; first and second 

 joints ferruginous beneath ; five or six last joints fulvous 

 beneath : hypostoma with a few distant yellow, short 

 hairs, not sericeous ; at the middle of the tip, a little 

 prominent: fAorax, .with a black dorsal line abbreviated 

 behind, each side of which is an obsolete hne confluent 

 behind, exterior to which at base is a black line attenuated 

 before and abbreviated : wings dark violaceous : foet 

 black ; tibiae within, excepting the posterior pair ; knees 

 and tarsi yellowish ; abdomen black : first seo-ment obso- 

 letely piceous each side and on the posterior edge ; second 

 segment also with obscure ferruginous on each side, some- 

 times obsolete. . 



Length over four fifths of an inch. 



m 



Resembles the annularis, Fabr. but the ferruginous 

 color is more prevalent : the hypostoma is not sericeous, 

 a little more prominent in the middle ; the basal abdomi- 

 nal segment is somewhat larger and destitute of the annu- 

 lation. I have obtained it abundantly in Indiana and Mr. 

 Barabino sent it to me from New Orleans. 



2. P. areata. Thorax black bi-lineate and margined 



with yellow. 



