ATTACKING THE LEAVES. 



177 



the body is flattened, the sides abruptly inclined, and striped 

 with faint, oblique, yellowish lines. 



When mature, it forms a short, blunt, brown chrysalis, 

 which in ten or twelve days produces 

 the butterfly. 



This measures, when its wings are 

 ex{)anded, an inch or more across (see 

 Fig. 187). It is of a plain, dark- 

 brown color above, but beneath the 

 wings are prettily ornamented with 

 wavy white streaks. There is also a 

 row of orange-colored, crescent-shaped 

 spots on the hinder portion of the pos- 

 terior wings, and a large \blue spot near 

 their hind angle. Each of the hind 

 wings has two thread-like tails, one longer than the other. 



No. 91.— The Plum-tree Catocala. 



Catocala ultronia Hubn. 



About the middle of June, when jarring the plum-trees for 

 curculios, a very curious-looking, leech-like caterpillar often 

 drops on the sheet spread beneath. It is flattened, with its 

 body thick in the middle and tapering towards each end, and 

 of a grayish-brown color. When full grown, it closely resem- 

 bles Fig. 188 ; it is a little more than an inch and a half long, 



Fig. 188. 





dull grayish browfi above, with two or four small reddish 



tubercles on. each segment of the body, all encircled by a slight 



ring of black at their base. On the upper part of the ninth 



segment there is a istout, fleshy horn, about one-twelfth of an 



inch long, pointed and similar in color to the body, but with 



12 



