ARGYNNIS XI. 



the last segments ; the dorsals also distinctly yellow on anterior segments, the 

 last wholly black ; the dorsal spines on 2 ai'e directed forward, but are no longer 

 than others ; head as at next previous stage, black in front, but yellow behind ; 

 all yellow is reddish, or honey-colored. 



At this stage there was some variation in individuals in the color of the spines. 

 One had all yellow at base except the dorsals on 2 and 12, which were black. 

 (Fig. e.) To next moult five to eight days. 



After 4th moult : Length .0 inch ; color velvet-black ; laterals wholly bright 

 yolk-yellow ; subdorsals same on anterior half, the remainder duller yellow ; 

 dorsals bright yellow on anterior half, but after 6 less so, and on 9 to 12 black ; 

 in line with the dorsal spines on segments from 3 to 11 two gray dots; head as 

 before. 



Another larva had all three rows of spines largely reddish-yellow fully half- 

 way up from base ; the last two pairs of dorsals shading into brown. (Fig./.) 

 To next moult four to eight days. 



After 5th moult : Length 1.1 and 1.2 inch. (Fig. g.) Reached maturity in 

 six to eight days. 



Mature Larva. — Length 1.8 inch at rest, 2 inches in motion ; greatest 

 breadth at rest .35 inch ; color velvety black, under side chocolate-brown ; be- 

 tween each jiair of dorsal spines from 3 to 11 two gray dots transverse; the 

 spines tliroughout slender, beset with short black bristles ; the bases of all spines 

 reddish-yellow, and for about two thirds up, the rest shining black ; the spines of 

 2 wholly black, a little recurved, directed forward, but no longer than other dor- 

 sals ; the longest dorsals .14 inch; feet and pro-legs black; head small, .14 

 inch wide, and equally high, subcordate, the front flattened, finely tuberculated, 

 the back much rounded, the vertices sub-conic, and each on its anterior side 

 giving a small black conic process ; the face much covered with black hairs 

 of irregular length ; color of front dull dark brown, of back reddish-yellow. 

 Several larvae were as described, others showed much less yellow on the spines ; 

 the laterals always largely yellow, the subdorsals much less so, the dorsals a 

 little yellow at base from 3 to 6, after that less and less, changing gradually to 

 brown, and on 11 to 13 black. In from two to three days after maturit}' the 

 larvas suspended, and in about twenty-four hours pupated. (Fig. h.) 



Cpirysalis. — Length 1.1 inch; breadth at wing-cases .4, of abdomen .36 

 inch ; cylindrical, a little compressed laterally ; head case prominent, nearly 

 square at top, the vertices being but very slightly elevated, transversely rounded 



