THE CANADIAN ENTOMOLOGIST. 169 



4. Tegulae black ; lower part of cheeks covered with hair ; axillary 



spines rather long (Colorado) erysimi Ckll. 



Tegulte red 5. 



5. Sides of middle of mesothorax very densely punctured ; lower part of 



cheeks covered with hair 6. 



Sides of middle of mesothorax with well-se])arated punctures ; lower 

 part of cheeks bare, bounded behind by a very strong keel \ axillary 

 spines very short > 7. 



6. Face broader ; anterior tibise, all the tarsi, and other parts of legs 



bright ferruginous ; median apical spine of abdomen very small 



(Arizona) quercina Ckll. 



Face narrower ; legs black, with the small joints of tarsi and apices of 

 femora and tibice dark red ; median apical spine of abdomen very 

 long (California) fragarice Ckll. 



7. Fifth abdominal segment with small lateral spines j hair of face white 



(New Mexico) texana, subsp. vegana Ckll. 



Fifth abdominal segment without lateral spines ; hair of face with a 

 yellowish tint (Washington Co., Wis.; Graenicher ) .texana Cresson. 



8. Tegute entirely bright red : leg red 9. 



Tegulae black, or dull and dark red 12. 



9. Lower apical teeth of abdomen long and slender 10. 



Lower apical teeth of abdomen broidened; thorax above without 



hair spots 11. 



10. Ventral surface of abdomen densely and very coarsely punctured 



(Boulder, Colorado) édita Cresson, 



Ventral surface of abdomen shining, with widely-separated punctures 



(Falls Church, Va.; Banks) sayi Robertson. 



ir. Larger; lower apical teeth of abdomen more widely separated; 



second s. m. receiving recurrent nervures about equally distant from 



base and apex immaciclata Ckll. 



Smaller ; lower apical teeth of abdomen less widely separated ; first 



r. n. joining second s. m. very near base, very much nearer than 



second r. n. to apex (California) hirsiitissima Ckll. 



12. End of abdomen narrow and elongated, with a deep parallel-sided 



sulcus above ; lower apical teeth very sharp ; hind spurs red ; very 



small species (Boulder, Colorado) deani Ckll. 



End of abdomen broader, the median sulcus broadened 13. 



13. Legs bright red ; anterior coxae strongly spined 14. 



Legs black, or the tarsi red 15. 



