Plate XXI. 



(To be bound facing Piatt XXI.) 



Comparative view of Theclid and Lyc#:nid larval hair-bases in final instar. 



Fig. 1. — Portion of larval skin of Laeosopis roboris, last instar x 100. 



The larger hairs are from the lateral flange, the smaller those just above. 

 The former are more pointed, the latter continue of nearly even thickness to the end ; 

 both are very finely, and especially at the ends of the smaller hairs very closely, 

 spiculated. The bases are very like some flowers [e.g., convolvulus), the hair 

 being the stalk, with the margin of the petals attached to the skin. Several 

 lenticles are also seen. 



Fig. 2. — Portion of larval skin of Lampides boeticus, last instar x 200 (i.e., 

 twice that of fig. 1). 



The hairs are very similar to those of Laeosopis roboris (fig. 1), but the 

 hair-bases have 5 or 6 spines around them. Several curious tall lenticles appear 

 in this figure. None of the curious hairs, some of which occur in pi. xvi, are 

 seen in this fig. 



N.B. — In both figures the hairs are squeezed down fiat, and, so far, present 

 an abnormal disposition. 



