HACKBERRY BUTTERFLIES. 
605 
genus Telenomus and described recently by Mr. Howard, in Mr. Scol- 
der's Butterflies of New England, uuder the name Telenomus rileyi. 
Besides this egg-parasite I have reared from the pupa, Chalcis flavi- 
k a 
Fig. 199.— Apatura clyton: g, larva, half grown, dorsal view; 
h, imago, male, underside— natural size; i, j, k, I, m, the five 
different heads of larva ■ n, o, dorsal and lateral views of larval 
joint ; p, egg— enlarged ; q, larvae as when hibernating —nat- 
ural size. After Riley. 
pes Fabr. and Pimpla annulipes Brulle, while Limneria fugitiva Say 
was reared from the larva by Mr. A. H. Mundt in Illinois, all recorded 
in Mr. Scudder's work. 
3. The Interrogation Butterfly. 
Grapta interrogationis Fabr. 
A spiny, reddish-brown caterpillar, more or less speckled with white, feeding on the 
leaves in July. 
The very full life-history and bibliography of this species in Scudder's 
recent elaborate work, "Butterflies of New England," leaves very little, 
if anything, to be recorded. 
The species is by no means rare in Missouri, where it first came under 
my observation, and while common on the Elm and Hop, is more rarely, 
yet not infrequently, met with on the Hackberry, as I have frequently 
observed it on this tree. 
The following facts are extracted from notes made in 1870 : 
The egg with its nine vertical ribs is at first dull bluish-green, after- 
ward becoming grayish-green with silvery reflections. It is laid singly 
or in chains, one above another, either on the upper or lower portion of 
a leaf. 
The duration in the egg state is four days. Two eggs which I saw a 
female lay on a leaf May 19, hatched May 23, and the spines on the 
young larva could be distinctly discerned through the delicate egg-shell 
before hatching. The length of the egg was .95 mm ; width .7 mm . 
The full-grown caterpillar has the body black, covered with light yellow papilli- 
form poiuts, which are thickest and of a deeper yellow toward the head. It is also 
