OF NATLRAL HISTORY. 7. 11 



Ion;,' as the preceding one, <tbs(KhL'ly j.unctun-.l each hi<lc, al tiji 

 obtusely craarginatc : Uirsi pale honey-yellow : venter braiwy. 



Length less than three-twentieths of an inch. 



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



PYIIIA Lepel. .t Serv. 

 P. TRIDENS li. & P. — I^iieyc. Mcth. Chri/sis cariiuiUt n<'b. 

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



FOKMICA L. 

 A. First cubital colliilo without recurrent nervure. 



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

 Inhabits Louisiana. 



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

 .><hort 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. liarabino. The .small di.-:cni(l;il cellule, .so 

 .distinct in the wing of F. rnfa F., docs not exist in this specica. 



2. F. LAUTA. — 9 Body piceous, more or less varied with 

 black; the piceous color prevails chiefly on the stcthidium and 

 mouth : mandibles with larger and regular punctures ; between 

 the antenna) a slender, impressed line : thorax with generally a 

 black line each side : scutel darker than the th(irax : wings with 

 yellowish nervures : no recurrent nervure : inferior nervure of 

 the cubital cellule arising from the middle uf 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 the tip of the 

 axillary nervure : abdomen black ; lirst segment often piceous : 

 feet honey-yellow : tibiae and tarsi darker. 



Length over three-tenths of an inch. 



% Entirely black, excepting the wings, which arc like those of 

 the female : the thorax has a distinct, longitudinal imprcH.sod 

 line before, which sometimes exists in the female, but less di.s- 

 tinct. [287J 



1835.] 



