168 [June 



by the thorax beneath and the metathoros being black, and by the 

 central area of the latter being quadrate and not at all elongate. 



4S. Ich. discus, n. sp. 



Black ; face, mesothorax, scutellum, legs and abdomeu, except sutures. 

 fulvo-ferru2;iuous: %vings subhyaline : central area of metathorax large, quad- 

 rate. 



Male. — Head black, shining; face beneath the anteunre, frontal or- 

 bits, clypeus and mandibles, except base and apex, yellowish-fulvous ; 

 palpi yellowish ; antennae about half the length of the body, black, the 

 basal joint beneath fulvous. Thorax black, closely punctured, shining, 

 the disk above, and a spot before the wings, obscure ferruginous ; 

 scutellum rather flat, smooth and shining, yellowish-ferruginous ; meta- 

 thorax opaque black, the elevated lines well defined, the central area 

 large, quadrate, slightly transverse. Wings subhyaline, slightly stained 

 with fuliginous ; nervures blackish, testaceous at base, stigma fuscous ; 

 areolet 5-angular. Legs fulvous above, yellow beneath ; the coxae and 

 a spot on the trochanters, black, the four anterior coxa; with a large 

 yellow spot beneath. Abdomen ferruginous, dai'ker towards the apex ; 

 basal segment black, distinctly bilineated, and having an obscure fer- 

 ruginous spot at the extreme tip ; basal margin of the second and three 

 following segments narrowly black, the second and third segments 

 above paler ferruginous than the others; beneath, the segments are 

 dull ferruginous, stained with fuscous on the disk of the second, third 

 and fourth segments. Length 6 lines; expanse of wings 10 lines. 



Hah. — Rocky Mountains, Colorado Territory. 



49. Ich. subrufus, n. sp. 



Dull rufous: tips of anteiiuffi, pectus, pleura, metathnrax and eo.Kte black : 

 scutellum and basal portion of antennae tinged witli yelbiwish ; wings fusco- 

 hyaline : central area of metathorax obsolete. 



Female. — Dull rufous ; antennae about half the length of the body, 

 involute at tip, the 17 basal joints submoniliform, rufous, golden seri- 

 ceous, apical joints black. Thorax finely punctured, shining, black ; 

 the collar and mesothorax rufous, the latter slightly stained on the disk 

 in front with fuscous ; scutellum rather flat, polished, yellowish-ferru- 

 ginous ; metathorax black, finely punctured, the elevated lines not dis- 

 tinct, the central area obsolete. Wings fusco-hyaline with a yellowish 

 tinge ; nervures fuscous, paler at base ; stigma fulvous ; areolet 5-an- 

 gular. Legs pale rufous, the coxae black. Abdomeu elongate ; basal 



