I 



398 



Suf/^s Descriptions of 



4 



tergum more densely punctured towards the tip ; basal 



I 



segment on the anterior face impunctured, polished; re- 

 aiaining segments with a distinct line on their anterior 

 sub-margins, curving backward on each side ; between 

 this line and the basal edge, particularly on the third and 

 fourth segments, the surface is but little punctured and is 

 polished, resembling a small segment :/ec^ blackish, with 

 piceous tarsi and whitish hair : pleura with a small yellow 

 point under the wino;-scale. 



Length a little over three tenths of an inch. 



J Nasus and quadrate spot on the labrum, white ; 

 anterior tibiae whitish on their exterior edee. " 



Length one fourth of an inch. 



The spots on the nasus, labrum and pleura, as well as 

 the line on the tibiae in the male correspond with those 

 of the male of C. albilabris^ F, but the general color is 

 altogether different. A variety ? is destitute of the spot 

 on the labrum and has but a very small spot on the 

 nasus. 



. The maxillary palpi sometimes appear to have six 

 joints. ' ^ ■ ' 



I am not sure that the male above described, is that of 

 the present species. 



Stelis, Panz. 



i 



S. obesa. Black, varied with yellow ; wings fuhgi- 



nous. 



Inhab. Indiana. - 



Body robust, convex, punctured, black : nasus, mandi- 

 hks at base, orbits anteriorly and abbreviated line behind 

 yellow : thorax with a yellow, arcuated ' line each side 

 extending on the anterior naargin : scutel somwhat in- 



% 



