272 MISC. PUBLICATION 42 4, U. S. DEPT. OF AGRICULTURE 



Figure 37. — Aster olecaniiim launeae: A, outline, X 60; B, section of margin, X 

 650 ; C, genital and anal area, X 165 ; D, multilocular pore ; E, tubular duct ; F, 

 spiracle, X 650; G, antenna. A. minus: H, outline, X 87; I, genital and anal 

 area, X 230 ; J, ventral quadrilocular pore ; K, marginal quinquelocular pore ; 

 L, tubular duct; If, antenna ; N, 8-shaped pore; 0. section of margin, X 650. 



