1864.] 165 



appearance with its apex truncate ; metathorax scabrous, opaque black, 

 the elevated lines well defined, the central area rather small, elonu-ate, 

 narrow, rounded in front and truncate behind. Wings nearly hyaline; 

 iiervures fuscous, pale testaceous at base, stigraa and most of the costa 

 fulvous ; areolet 5-angular. Legs bright yellow ; anterior coxee black 

 above, yellow beneath, intermediate pair almost entirely yellow, having 

 a black stripe on the exterior side, posterior pair entirely black ; pos- 

 terior side of the four anterior femora with a broad black vitta mar- 

 gined above with pale ferruginous, posterior femora, except extreme 

 base and apex, and the apical half of their tibias, black. Abdomen dull 

 rufous, subopaque ; basal segment black, bilineated, faintly aciculate, 

 with a subobsolete rufous dot at the extreme tip ; on each side of the 

 second segment at bnse a somewhat obliquely impressed fovea; a black 

 mark occupies nearly the basal half of this segment, the posterior mar- 

 gin beino- concave and leavino; an obtuse lobe on each side not touch- 

 ino- the lateral maroin of the seirment ; basal maroin of the four follow- 

 ing segments black, that on the third segment slightly and gradually 

 dilated on the disk, that on the fourth and fifth segments suddenly and 

 broadly dilated on the disk reaching the middle of the segments, that 

 on the sixth segment small ; the apical segment entirely rufous ; be- 

 neath pale rufous, stained with yellowish on the middle of the second, 

 third and fourth segments. Length 6i lines ; expanse of wings 11 lines. 

 Ifab. — Kocky Mountains, ('olorado Territory. 



44. Ich. vultus. II. #j>. 



Black; face bright yellow; legs and abdomen rufous; wings subh valine ■ 

 central area of metathorax rather large, lunate. 



Alale. — Black, finely and densely punctured; face beneath the an- 

 tennae, orbits, interrupted behind, clypeus and spot on mandibles, bright 

 yellow ; palpi pale ; antennae more than half the length of the body, 

 porrect, black, opaque, basal joint beneath yellowish. Thorax shining; 

 tegulae, a dot before them and the apical half of the scutellum pale 

 honey-yellow ; scutellum rather flat, polished ; metathorax densely 

 punctured, the elevated lines sharply defined, the central area rather 

 large, lunate, transverse, rounded in front and indented behind. Wings 

 subhyaline, slightly tinged with fuliginous ; nervures and stigma fuscous ; 

 areolet .5-angular or sub triangular. Legs rufous, tibise and tai'si tinged 

 with yellow, the coxae, trochanters and the apex of the posterior tibiae, 



