46 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 5( 



PLATE 4B 



Fig. 12. Cross-section of the wing. (Magnified 30 diameters. Photo- 

 graphed with Zeiss achroniat A.) 



gi, Marginal vein. 



Iba, Crest of first raised (convex) fold of the anterior region. 



Ilaa, Second depressed (concave) fold of the anterior region. 



Illba, Crest of third raised (convex) fold of the anterior region. 



lam, First depressed (concave) fold of the middle region, discoidal vein. 



Ilbm, Crest of second raised (convex) fold of the middle region. 



Ilap, Second depressed (concave) fold of the posterior region, anal vein. 



Fig. 13. Part of a cross-section of the wing. (Magnified 100 diameters. 

 Photographed with Zeiss acliromat A, Ocular 6.) 



Fig. 14. Cross-section of the wing. (Magnified 30 diameters. Photo- 

 graphed with Zeiss achromat A.) 



gi, Marginal vein. 



Ilaa, Second depressed (concave) fold of the anterior region. 



IlJba, Crest of third raised (convex) fold of the anterior region. 



lam. First depressed (concave) fold of the middle region, discoidal vein. 



Ilap, Second depressed (concave) fold of the posterior region, anal vein. 



