553 



Figure 4.-5. campestris: a, Cuticle from dorsal side of thoracic segments of a female to 

 show relative size and positions of thoracic bosses, X 12.5. b, Left bosse and sensory 

 bristle from eighth thoracic segment of a female, lateral aspect, X 660. c, Outline of 

 cross-section of basal article of right antenna of a male to show relative size of apophysis, 

 X 30. ant. and post., anteroposterior diameter of the article, d, Right penis and adjacent 

 part of second genital segment of a male, X 44. v. /., right ventral lobe of genital seg- 

 ments; v.s., vesicula seminalis; pr. p., retractile part of penis; sp., chitinized spur on 

 rigid part of penis. 



