256 MISC. PUBLICATION 4 2 4, U. S. DEPT. OF AGRICULTURE 



Figure 21. — Asterolecaniiun elongatum: A, outline, X 165; B, tubular duct. A. 

 epaeridis: C, tubular duct; D, outline, X 60; E, genital an anal area, X 330; 

 F, spiracle; G, antenna; H, section of margin, X 650; I, nmltilocular pore; J, 

 quinquelocular pore ; K, minute dorsal 8-shaped pore ; L, dark-rimmed 8-shaped 

 pore ; M, disk pore ; N, submarginal 8-shaped pore. 



