AMERICAN ENTOMOLOGY. 79 



Desc. Head green : antennae blackish, first and second joints 

 pale ; triangular space between the eyes, brown, extending in a 

 curved line backwards and downwards : thorax greenish-brown 

 above depressed, on the two anterior segments an inconspicuous 

 hardly elevated, longitudinal line : hemelytra pale dull yellowish 

 at base brownish, nervures at tip, dusky ; three ecpuidistant broad 

 brownish-black bands, the intermediate one on the middle : wings 

 pale yellow, with a slight tinge of green ; a broad brownish black 

 band, narrowed and marginal behind; tip dull whitish, with the 

 nervures blackish : posterior thighs dull yellowish, with a black 

 band on the middle, on the inner side, extending broadly towards 

 the base ; tip blackish : posterior tibiae bright fulvous. 



Obs. This pretty insect occurred in Arkansaw, at the distance 

 of about three hundred miles from the Rocky Mountains. 



The lower figure. 



HETEROMYIA. Plate XXXV. 



Artificial character. Antennae porrect, filiform, fourteen 

 jointed ; five terminal joints elongated ; palpi exserted, a little 

 arcuated, four jointed ; basal joint shortest, a little contracted in 

 the middle ; ocelli none ; eyes reniform ; posterior feet much 

 elongated, slender, and with a single nail at tip; anterior pair 

 with somewhat elongated coxae, and much dilated femora, armed 

 with a series of short spines on the anterior edge, on which the 

 arcuated tibia closes. 



Natural character. Body moderately slender ; head small, 

 rounded, flattened before ; antennae in the middle of the face; 

 first joint large, but not long ; the eight following joints sub- 

 oval ; the five terminal joints long, not dilated, cylindric, each 

 being twice the length of one of the preceding ones ; eyes reni- 

 form, large, wider beneath, and approaching above ; stemmata 

 none; palpi arcuated, four jointed, first joint shortest, last joint 

 longest; proboscis shorter than the head ; thorax sub-globular, 

 convex above, and projecting a little forward acutely before ; be- 

 neath convex ; scutel transverse ; wings moderate, somewhat 

 lanceolate ; poisers naked ; feet unequal ; anterior pair with the 

 coxae somewhat elongated ; thighs dilated, and with a series of 

 spines on the lower side ; tibiae arcuated, accurately closing on 

 the inferior surface of the thigh ; tarsi moderate ; intermediate 



