PLATE X. 



Figs. 1-7. Scales of Thyridoptrryx iphemcnvfonnis. (Magnified.) 

 Figs. 8-9. ?>cdi\Q?, oi Psci/dflpsyc/ic cxii^i/a. (Magnified.) 

 Fig. 10. SiCsXt oi Psych r coiifcdci-a/a. (Magnified.) 

 Fig. II. 'icdAe oi Oikffici/s al'I'oifii. (Msgnified.) 

 Figs. 12-14. Scales of Triprocris iiiarfciiii. (Magnified.) 

 Figs. 15-16. Scales of Harnsiiia coraciva. (Magnified.) 

 Fig. 17. ^Q.2i\& oi Acoloifhus falsariiis. (Magnified.) 

 Fig. 18. ?iQ.2\& o{ Pyroiiio>pha <iiuiidiafa^ (Magnifieii.) 

 Figs. 19-24. '^^cdiX^f, ol Eiiih-a cippns. (Magnified.) 

 Figs. 25-26. Scales of Parasa chloris. (Magnified.) 

 Fig. 27. Scale of Empretia stimitlea. (Magnified.) 

 Figs. 28-29. Scales from hindwing of it//rA-rt <7////j-. (Magnified.) 

 Fig. 30. Scale of Gastropaclia aun'r/cana. (Magnified.) 

 Fig. 31. Scale of Tolype rcllrda. (Magnified.) 

 Fig. 32. Scale of Clisocainpa disstria. (Magnified.) 

 Fig. j^Ty. Portion of wing of Papilio troilws, showing regular ar- 

 rangement of insertion cups. (Magnified,) 



Fig. 34. Portion of wing of Gastropaclia aiiicricana, showing ir- 

 regular arrangement of insertion cu])S. (Magnified.) 



