OF NATURAL HISTORY, 731 



long as the preceding one, obsoeltely punctured eacli side, at tip 

 obtusely emarginate : tarsi pale honey-yellow : venter brassy. 



Length less than three-twentieths of an inch. 



The smallest species I have yet met with in this country. 



PYRIA Lepel. & Serv. 

 P. TRIDENS L. & P. — Encyc. Meth. Chrysis carinata nob. 

 Contrib. Macl. Lye. p. 82. [286] 



FORMICA L. 



A. First cubital cellule without recurrent nervure. 



1. F. MELLEA. — Honey-yellow ; scale truncate. 

 Inhabits Louisiana. 



% Body entirely honey -yellow ; eyes rather prominent, black, 

 short oval : wings very slightly tinged with yellow ; nervures 

 yellow : scale robust, broad, truncate, and having a slight tuber- 

 cle 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 regular 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 : no recurrent nervure : inferior nervure of 

 the cubital cellule arising from the middle of the tip of the bra- 

 chial cellule ; the terminal line of this latter cellule is nearly rec- 

 tilinear and transverse ; anal nervure rectilinear at base, angu- 

 larly undulated and slightly communicating with i\iQ tip of the 

 axillary nervure : abdomen black ; first segment often piceous : 

 feet honey-yellow : tibiae and tarsi darker. 



Length over three-tenths of an inch. 



% 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 female, but less dis- 

 tinct. [287] 

 1835.] 



