Explanation of Plate 18. 



This plate illustrates the development of coloration in the larvae at 

 ecdysis, and upon the head and epicranium of the imago in the pupal stage. 



Figs, i, 2, 3, and 4, L. signaiicollis Stal, illustrate the change 

 of the larvae at the second ecdysis. From Tierra Blanca, 

 Vera Cruz, Mexico. 



Figs. 5, 6, 7, and 8, L. signaiicollis Stal, illustrate development of 

 coloration at the second ecdysis. From Cuernavaca, Morelos, 

 Mexico. 



Development of coloration upon the epicranium and pronotum of the 

 imagines: 



Figs. 9 to 14, L. undecimlineata. 



Figs. 15 to 20, L. multitaniata. 



Figs. 21 to 26, L. melanolhorax. 



Figs. 27 to 32, L. violescens. 



Figs. 33 to 38, L. dilecia (green form). 



