144 NATHAN BANKS. 



One specimen from Runnymede, Florida. Bred from a white 

 cocoon enclosed in a mass of rubbish. It is the smallest of our spe- 

 cies of this genus, and differs from the others in that the median 

 vein runs straight to the hind margin and not into the second series 

 of gradate veinlets. 



L.EUCOCHRYSA McLach. 



General characters of Chrysopa, but antennae very much longer 

 than the wings. Pterostigma very distinct, brownish. The third 

 cubital cell is divided obliquely, but the divisory veinlet is nearly 

 straight, and starts close to the cubitus. The first connecting vein- 

 let from the radial sector back to the median extends basally before 

 the origin of radial sector (not so in Chrysopa). The genus, with 

 us, occurs only in the Southern States, and is more fully represented 

 in tropical countries. Type C. varia. 



Our two species may be distinguished as follows: 



Basal joints of antennse reddish above ; anterior wings quite broad ; gradate series 

 nearly parallel, the inner of 7-8 veinlets; large species.. . florid Jiiia. 



Basal joints of anteunse not reddish above, anterior wings rather narrow ; gradate 

 series converging behind, the inner of 5 veinlets; smaller species. 



americana. 



L.eucoclirysa floridana Banks. — Pale green; basal joints of antenna? 

 reddish above ; a narrow transverse red line, angulate at middle, on the front of 

 vertex reaching from eye to eye. Pronotum narrowly reddish on margin. Wings 

 with green veins, most of the cross-veinlets in fore wings black; pterostigma 

 long, brownish, very distinct in both pairs. Antennas longer than the wings, 

 vertex somewhat elevated, hut flat on top; pronotum longer than broad, much 

 narrowed in front. Anterior wings broad, rounded at tips; hind wings rather 

 narrow, acute at tips; gradate series nearly parallel, seven to eight veinlets in 

 inner series. Length 17 mm. 



Specimens come from Lake Worth and Biscayne Bay, Florida, 

 and from Ocean Springs and Utica (August), Mississippi. It may 

 be the Chrysopa citri Ashmead, but his description may apply to 

 the next species, or to some species as yet unknown to me. 



L.eiicoclirysa americana Banks. — Pale green ; vertex with a narrow 

 transverse red line, angulate in middle, reaching from eye to eye; pronotum 

 with a red mark on anterior sides. Wings with green venation, a few of the 

 cross-veinlets wholly or in part black ; pterostigma brownish, very distinct in all 

 pairs. Antennas much longer than the wings; vertex with two pits above; pro- 

 notum longer than broad, much narrowed in front. Wings rather narrow, the 

 fore pair nearly acute at tips, the hind pair plainly so. The gradate series con- 

 verge behind, the inner series of five veinlets. Length 15 mm. 



One specimen, the type, from Auburn, Ala. 



