91 



Melitaea Didyma. Of this species I have only incomplete investi- 

 jj-atiuns to offer, from which, however, I infer that in its development 

 it does not essentially differ from the previously named species. 



Argynnis Myrina. First Stage (fig. 34I. The young- cater- 

 pillar is beset with many bristles, which stand singly, and arranged 

 regularly in longitudinal rows, — dorsal, sub-dorsal, supra-stigmal and 

 infra-stigmal. These bristles, as in Melitcea, are long, slightly curved 

 and finely toothed. 



Second Stage (fig. 35). After the first moult the single brisdes 

 are replaced by numerous ones which stand on high warts. A large 

 part of the bristles are still toothed, though many smooth ones already 

 appear among them. 



Third Stage. The teeth on the bristles are now scarcely visible, 

 even by the aid of a strong magnifying power. 



The Fourth and Fifth Stages have not been at my disposal. 



(To be continued. ) 



DESCRIPTION OF THE PREPARATORY STAGES OF 

 LYCiENA MELISSA, Edw. 



HV \V. H . |U)WAK1)S. 



F(.(;. — Shape of Pseiidargioliis, round, flat at base, the top flattened 

 and nuich depressed in middle; the surface covered with a fine lace- 

 work, the meshes of which are mostly lozenge-shaped, and bear a low 

 rounded process at each angle. Duration of this stage about five days. 



Young Larva. — Length .03 inch; color yellow-green; surface pu- 

 bescent; dorsum high, rising to a narrow, flat ridge, which slopes from 

 segments 4 or 5 to 13; on either edge of this ridge is a row of long 

 white clubbed hairs, one at the posterior end of each segment, those 

 on anterior segments curved forward; the others back; along base, both 

 on sides and around segment 13, are similar hairs, bent down; others 

 from segment 2 fall forward, and the effect is that of a fringe around 

 the whole body; head ob-ovoid, black, smooth. Duration of this 

 stage five days. 



After first Moult: length .06 inch; color greenish white; shape very 

 much as at previous stage; the dorsum high and flattened; the hairs and 

 fringe as before. To next moult eight days. 



After second Moult; length .12 inch; color pale green; very much 

 the same shape as before; same flat ridge, hairs and fringe; surface pu- 

 bescent. To ne.\t moult five davs. 



