158 ENTOMOLOGICAL NEWS. [June 



Second abdominal segment broadly yellow ; two large 

 yellow spots on metathorax.* .... YINNDLA. 



Yellow on second segment narrowed or interrupted ; 



metathoracic spots feeble, usually wanting. 

 Legs largely yellow ; fifth abdominal segment almost 



entirely yellow. Yellow band on second abdominal 



segment not interrupted. 

 Second joint of the nagellum slightly shorter than the 



third CIVILIS. 



Second joint of the nagellum about one-third the 



length of the third RIVALIS. 



Legs black with brown markings ; broad basal portion 



of the fifth abdominal segment black. 

 Yellow bauds of the abdomen entire. . . FRAGILIS. 

 Yellow bauds on segments 2-4 broadly interrupted. 



INTERRUPT A. 



Eeddish brown and black, sometimes with pale yellow 



lateral markings on the abdomeu. 



Second abdomiual segment with large whitish, lateral 

 markings connected by a narrow, medially inter- 

 rupted line near the posterior edge. . . CROTOHII. 

 Lateral markings, when present, yellowish and not exteud- 



iug medially. 



On the sides of the abdominal-segments a large basal 

 black spot crowding the yellow into a narrow ob- 

 lique liue OBLIQUA 



Black spots small or wanting. 



Broad base of segments 1-4 black. . . OBSCURA. 

 Little or no black on base of segments 1-4. 



Fifth abdomiual segment with two yellow spots 

 or a baud.f 

 Scutellum sub-bilobate, with yellow spots. 



YIMTA. 



* Citrina, edwardsii and suavis, which are unknown lo me, also appear to go 

 here Swaz/wdifTers from vinnitli in that the fifth abdominal segment is entirely 

 yellow; edwzrdsii from both of these, in havinu : yellow markings on the disc of 

 the thorax ; and citrina from all these, in that the second joint of the Ilanellnm 

 is shorter than the third. 



t Opposila may be distinguished by its pale ferrutrinous color from :.'< la and 

 lepida, which are dark. 



