APATURA ir. 



o-reen, but many examples have the front black, or merely a blaek dot at the 

 base; ocelli and mandibles black. (Figs, /r, /i'\ heads of mature larva?.) 



Chrysalis. — Closely resembles that of Celtls in shape and color ; the seg- 

 ments of the abdomen are broader dorsally, making the keel one fourth longer, 

 and the thoracic segments are proportionately shorter ; the depression is less 

 angular and the mesonotum is more rounded, while the head case is less pro- 

 duced. 



Length, ^ .'J inch (Fig. /), ' 1.1 inch (Fig. k) ; compressed laterally ; the outline 

 of the under side irregularly convex, the wing cases being nearly flat ; the abdo- 

 men prominent dorsally, circular, sharply carinated, the anterior edge of each 

 segment on the keel produced and marked on either side by a shining black dot: 

 the thoracic segments depressed from the end of the keel, the sides excavated to- 

 wards the bases of the wings ; the mesonotum rounded ; the head case moderately 

 produced,^ sub-conic ; the palpi cases sharp and prominent ; color yellow-green, 

 the wing cases and the whole under side pale bluish-green, mottled and inscribed 

 with pale yellow ; the neuration of the wings distinct ; a yellow line pa.sses along 

 the dorsum and forks to the palpi cases ; another borders the posterior edge of 

 the wing cases. Duration of this stage nine and ten daj's. 



Clyton inhal)its much the same districts as Celtls, feeding in its larval state on 

 the same tree, the Hackljerry, Celtls occldentalls. It is occasional in New York, 

 and no doubt in New England, but the Valley of the Mississippi is its true home. 

 Some years ago I took a single specimen, fresh from chrysalis, in a thicket near 

 Newburgh, N. Y., and that is the only instance in which I have seen this butter- 

 fly on the wing, not having met with it even in West Virginia. I was much 

 surprised therefore at finding in my garden, at Coalburgh, 4th Jul}^ 1874, on a 

 low Hackberry, a large cluster of freshly deposited eggs of Chjton. They formed 

 a, rounded mass one quarter inch across, were closely packed and five or six 

 layers deep ; in all al)out two hundred eggs. (Fig. a.) Within the next-two days 

 I found two similar but smaller clusters; in all these cases upon the under side 

 of the leaf On 12th of July the larviv began to hatch, and in course of a few 

 hours had left the shells and gathered in a dense group near hy. They are in- 

 tensely gregarious in habit, and up to the time they separate, that is, till after 

 the third moult, they lie close together, completely concealing the leaf beneath, 

 and it is one of their peculiarities, even to maturity, that they do not often lie 

 straight, but take a sinuous position, and Avhen in cluster as one curves so do 

 those adjoining. Moreover they do not rest with heads all turned in the same 

 direction and bodies in line or parallel, as is the habit of many species of grega- 

 rious larva?, but th-ey form an irregular mass, the heads mostly outside and front- 

 ing in every direction. This feature is correctly represented in the cluster of 



