PROC. ACAD. NAT. SCI. PHILA. 1907. 



PLATE XXXVIII. 



22 



lb-' 



ki'" 



jd-^i ' 



jd'^s 



lb"-,,.,,. 



J,d'- 



Jd'== -^j^ 



iB ■: J,D ■ 



uf^ 



SURFACE. DEVELOPMENT OF PLANOGERA INQUILINA. 



