46 PROCEEDINGS OF THE ACADEMY OF [1896. 



7. Head brown, thorax black 1 texana $ 



Head and thorax dark green 2 latior $ 



8. Cheeks toothed beneath, legs entirely yellow . 14 pulchriov $ 

 Cheeks unarmed , 9 



9. Face all dark 10 



Face partly pale 11 



10. Nervures colorless, abdomen orange .... 54 semicrocea 2 

 Nervures fuscous, abdomen dark testaceous, 32 halictoides ? 

 Nervures ferruginous, abdomen ferruginous . . 33 hicolor $ 



11. The pale color confined to clypeus and triangular marks at 



side of face 20 chamcesarachce 9 



Face all light below antenure ; length 3? mm 12 



12. Area between eyes and ocelli smooth and shining likemeso- 



thorax,2d segment of abdomen with a dark band, vertex 



and mesothorax not blue 54 semicrocea S 



Area between eyes and ocelli di.stinctly granular, much 

 duller than the shining mesothorax, 2d segment of abdo- 

 men without a band, vertex and mesothorax dark blue, 



20 cham(esarachce $ 



13. Clypeus entirely dark 14 



Clypeus not entirely dark 24 



14. Abdomen piceous with yellow spots or dots, legs with yellow 



markings 15 



Abdomen not spotted ](> 



15. Length about 6 mm., abdomen with only 4 pale dots . . 



26 var. punctata 9 

 Length about 5 mm., abdomen with 6 pale yellow spots or 



blotches 26 sexmnculata 9 



16. Abdomen black with pale yellowish bands 17 



Abdomen not banded 20 



Abdomen dark brown, with a short white band on 2d seg- 

 ment; size very small, less than 4 mm. . 41 cladothricis 9 



Abdomen testaceous with suffused bands, mesothorax 



smooth, shiny 6 ventralis 9 



17. Stigma brownish, mesothorax hairy, size larger, 7 mm. or 



over 18 



Stigma entirely pallid, mesothorax practically nude, size 



smaller, not over 6 mm 19 



18. Nervures almost colorless 22 sp}iceralce(e 9 



Nervures dark brown 22 y.alticola 9 



