ARGYNNIS VII. 



the vortioes proiuiiient, tlio surfoce sparsely jjilose ; color brown, behind t'ulvous. 

 (Fig. 0-) 



Thirty-six lionrs elapsed after suspension before the cliange to chrysalis took 

 place, t\venty-t-\vo days from the iifth moult. 



Ciii;ysalis. — Length 1.2 inch, greatest breadth .43 inch; cylindrical, with an 

 an2:ular excavation below the mesonotum : the whole surface finely corrugated ; 

 head-case square, tranversely rounded, with somewhat prominent vertices : 

 me.sonotum prominent, compressed, carinated, rounded at summit, and with a 

 shar]) tnl)ercle at l)ase on either side ; two other tubercles just l)elow and back of 

 the head ; wino'-cases nruch elevated above the surface, the outer edu;es at base 

 flaring; on the alxlomen two dorsal rows of long, sharp tubercles, and smaller 

 ones, corresponding to the first lat<'ral spines on the larva, on the three or four 

 middle segments ; color of the anteiMor poitious and of the wing-cases light- 

 brown, streaked with darker shades ; of the abdomen dark l^'own, mottled on 

 the sides with red. (Fig. //. ) Duration of this stage nearly twenty-one days; 

 making the time fnjm tlie egg to liii' imago about nine months. 



NOTKS ox TIIK PKEPAKATOItY STAGES OF AIUIYXXIS DIAXA, CYBELE, AND 



APIIKODITE. 



After many discovu'aging attempts at raising the larvtc of one or other of these 

 species, I succeeded in bringing all from eggs to chrysalids in 1873-4. The 

 females rciidily deposit their eggs in confinement, and at different times I had had 

 hundreds hatch, but lost tlie young larvaj almost immediately. Ci/hele is a com- 

 mon species at Coalburgh, and in August and Septemljer midtitudes of them may 

 be taken on flowers, in the fields on Vernonia, in the garden on single zinnias, 

 especially. Aphrodite is sometimes taken, but is rare, and as to Diana, though 

 ten years ago I was able to take many, of late it has become almost extinct liere- 

 abouts. But on last of August, 1873, Mr. T. L. Mead brouglit from a locality 

 fifty miles east of Coalburgh, among the mountains, several living females of 

 Apltrodlte and some sixty of Diana. These were placed in boxes and kegs, with 

 fresh plants of violet, as were also females of Cyhele, and a very large number of 

 eggs were obtained of each species, laid upon the leaves and stems of the plants, 

 and also upon the sides of the boxes and the clotlis which covered them. Diana 

 also deposited freely upon stems of Vernonia, but I was never able to discover 

 that the .voung larva? fed on that plant. Dr. II. K. Hayhurst, at Sedalia, Mo., 

 to whom I had sent young larva^ of Diana in 18()!), wrote me at the time 

 that in some instances they did eat the surface of the leaves of Vernonia Nova- 

 boracensis. It is certain, however, that this larva thrives on violets of every 



