408 K \TOMOLOGICAI. NEWS [Dec., '09 



4. Variation in form of sinus. 

 5-6. Variations in apices. 



7. Vein scale of upper surface. 



8. Vein scale of lower surface. 



g. General view of vein with hair-like scales scattered on its sur- 

 face. 



B. Scales of the basal anal area. 



10, n, 12. Hair-like scales of the margin. 

 13-14. Surface scales. 



C. Scales of the outer anal area. 



15-19. Gradations from surface type to triangular fringe type. 



15. Length, .14-. 21 mm. 40 striae .00215 mm. apart. 



16. Length, .16 mm. 31-32 striae .00245 mm. apart. 



17. Length, .21 mm. 



18. Length, .2S-.34 mm. 



19. Length, .42-. 5 mm. 31 striae .00218 mm. apart. 



PI, ATE XXI. 



D. Scales of the central costal area. 

 20-21. Hair-like plumose forms. 



22. Short fringe type. 

 23-25. Surface types. 



23. Length, .124 mm. 36 striae .00239 mm. apart. 



E. Scales of the basal costal area. 



26. General view of the region. 



27. Hair-like type. 



28-29. Unsymmetrical forms with oblique striations. Length, .098 

 mm. 18 striae .0027 mm. apart. 



30-31. Variations of the general surface type occurring here. 

 Length, .15 mm. 38 striae .0017 mm. apart. 



32. Enlarged view of the unsymmetrical scale. 



33. View of the lower surface of the basal anal region of the fore- 

 wing. 



PLATE XXII. 



F. Scales of the central costal area. 



34-37. Variations of the typical surface scale. 



35. Length, .14 mm. 40 striae .0017 mm. apart. 



36. Length, .18 mm. 22 striae, .00175 mm. apart. 

 38-40. Hair-like types conspicuous in this region. 



G. Scales of the murotheca and adjacent area. 



41. View of the arrangement of scales in this region. 

 42-43. Androconia. Length, .O55-.O7 mm. 



44-45. Companion scales. Length, .07 mm. Striations visible only at 

 the base or margin of a few scales. 



46. One of the plumose hair-like forms occurring upon the vein 



47. Outline of typical scales to show the relative size of the andro- 

 conia and companion scales. 



