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DESCRIPTION OF THE PREPARATORY STAGES OF 

 THECLA HENRICI, GROTE. 



By W. H. Edwards. 



EGG. — Shaped like that of Lyccena Pseudargiolus, and 

 marked very much in the same manner; the top flattened, and at 

 micropyle depressed : about this last are three concentric rows 

 of minute spaces, rhomboidal to irregularly pentagonal ; the 

 remainder of the surface is covered with a frosted net work, the 

 meshes of which are triangular, and from each angle rises a low 

 rounded knob: color whitish-green ; this lace work seems to be 

 separable, and in one case where the egg had been rubbed by a 

 leaf, apparently, a film was turned up, and the real surface was 

 seen to be delicate green. Duration of this stage, 5 or 6 days. 



YOUNG LARVA. — Length, 4-ico inch; shape, oval; 

 broadest anteriorly, the base flattened ; dorsum high and sloping 

 posteriorly; the summit of dorsum flattened for a little space, 

 and on either side there is a row of' long recurved white hairs ; 

 along edge of base is another row of similar hairs, bent down ; 

 color brownish-yellow ; head obovoid, and smooth. Duration of 

 this stage, 5 days. 



After iST Moult. — Length, 8-iod inch; same shape; 

 segments rounded, but on dorsum rather angular; a red-brown 

 medio-dorsal stripe stopping at 12 ; on either side of this dull 

 yellow-green, with a macular brown line next outer edge, and 

 limiting the dorsal area ; sides sloping, a little incurved, red-brown, 

 with a broken yellowish line ; a similar but continuous line along 

 basal ridge ; whole underside yellow-green ; body much covered 

 on upper side with short, stiff, brown hairs ; head cordate, smooth, 

 yellow-green. To next moult between 3 and 4 days. 



After Second Moult. — Length, 12-100 inch ; shape as be- 

 fore ; the dorsum is considerably elevated, a tuberculous ridge 

 across each segment, from 4 to 11; color red-brown and dull yel- 

 low-green ; a red medio-dorsal band, tapering to a point pos- 

 teriorly ; through the band runs a green line ; outside this band 

 is a green one, containing a little red-brown space on each seg- 

 ment ; sides red-brown, with a green longitudinal line in middle; 

 basal ridge green. To next moult, 5 days. 



After Third Moult. — Length, 3- 10 inch ; greatest breadth 

 12-100 inch; the dorsum from 4 to ii presents a series of elevated 

 ridges, one to each segment, narrow in front, broad behind ; the 

 summit of dorsum flattened and a little concave, and covered by 

 a broad band, which is cut by a paler line ; the remainder of the 

 elevated ridges yellow-green, making two sub-dorsal macular 

 green bands ; sides sloping, nearly flat, red-brown, with an indis- 

 tinct green line; segment 2 is a broad, elevated rolled collar, in 

 which the head is concealed ; 3 ha= a similar collar in front; basal 

 ridge green, head yellow-green. 



One day later, length 4-10 inch : the color has changed to port- 



