440 KANSAS UNIVERSITY SCIENCE BULLETIN. 



. LEPTIS. 



TABLE TO THE SPECIES. 



1. Black, blackish, or fuscous 2 



Fiavous, ochraceous, or pale testaceous 12 



2. Wings distinctly ornamented 3 



Wings hyaline, gray or grayish subfuscous 5 



3. Antennse and palpi black 4 



AntennjB only partly black, palpi brownish, 8 mm mystaeea Macq. 



4. Abdomen pale at base lyunctipenni s Say. 



Abdomen not pale at base phcmbea Say. 



5. Abdomen at least with second, third and posterior margin of fourth seg- 



ments in part testaceous 6 



Abdomen with only the posterior margins of the segments testaceous, 



incisa Loew. 



Abdomen wholly black; grayish pruinose pruinosa Bigot. 



Abdomen with first segment blackish at base, second and third segments 

 with a large sinuous black band at base, following segments black, 



bordered with brown hoocliana Bigot. 



Second and third segments with a broad yellow band at base, the pos- 

 terior margins of which are deeply emarginate (Mexico)., .bltceniata Bell. 



6. Palpi black pilose 7 



Palpi white or yellowish white pilose 8 



7. Palpi black in ground color dimidiata Loew. 



Palpi yellow in ground color 2)alpali8f n. sp. 



8. Coxae black 9 



CoxEe yellow, or obscurely brownish yellow 10 



9. First abdominal segment wholly black maculifera Bigot. 



First abdominal segment largely yellow albibarbis Bigot. 



10. Mesonotum in certain lights subshining ^^ZewraZis, n. sp. 



Mesonotum opaque 11 



11. Second and third segments wholly yellow except a black spot at base 



(female) albibarbis Bigot. 



Second and third segments with only the posterior margin yellow 

 ( Mexico ) p>olitainiata Bell. 



12. Wings spotted albieornis Say. 



Wings not spotted or luteous on costal or posterior margin 13 



13. Abdomen with a dorsal series of black spots, with bases of segments 



fasciate black 14 



Abdomen without such spots or fasciae 17 



14. First antennal joint of the female, first two of male, black, 7.1-7.8 mm , 



scapularis Loew. 

 Antennae otherwise colored 15 



15. Antennae dilute luteous 16 



Terminal joints only, of each sex, pale veriebrata Say. 



