286 



Say^s Descriptions of 



Formica* L, 



m 



A. First cubital cellule without recurrent nervure. 



^ 



L F.meUea. Honey-yellow j scale truncate. 

 Inhabits Louisiana. 



$ Body entirely honey-yellow : eyes rather prominent, 

 black, short oval : wings very slightly tinged with yel- 

 low; nervures yellow: scale robust, broad, truncate, and 

 having a slight tubercle each side before, less than half 

 the height of the abdomen and not higher than the length 

 of its base. 



Length nine twentieths of an inch. 



Sent to me by Mr. Barabino. The small discoidal 

 cellule, so distinct in the wing of F. rufa^ F., does not 

 exist in this species. 



2. F. lauta. 9 Body piceous, more or less varied 

 with black ; the piceous color prevails chiefly on the 

 stethidium and mouth : mandibles with larger and regu- 

 lar punctures ; between the antennae a slender, impressed 

 line : thorax with generally a black line each side : scutel 

 darker than the thorax : wings with yellowish nervures ; 



nervure ; inferior nervure of the 'cubital 

 cellule arising from the middle of the tip of the brachial 

 cellule ; the terminal line of this latter cellule is nearly 

 rectilinear and transverse; anal nervure rectilinear at 

 base, angularly undulated and slightly communicating 

 with the tip of the axillary nervure : abdomen black ; 

 first segment often piceous: feet honey-yellow: iihicB 



no 



and tarsi darker. 



Length over three tenths of an inch. 

 i Entirely black, excepting the wings, which are like 

 those of the female : the thorax has a distinct, longitudinal 

 impressed line before, which sometimes exists in the 



distinct 



