TWO-MARKED TREE-HOPPER : ITS EGG-COVEI^NGS. 



:^83 



punctured ; thorax with a projecting horn before, which rises above the line of 

 the back, compressed, carinated above, each side, and beneath, and incurved to- 

 ward the tip ; between the lateral and inferior carina? are three elevated lines 

 converging toward the eye; superior carina of the horn continued upon the back 

 to the tip ; lateral carina of the horn continued upon the side to the middle of the 

 thoracic edge ; carina of the back slightly undulated, with two yellowish spots, 

 of which one is on the middle and the other near the tip smaller and placed nearer 

 to the anterior one than its own length ; tip acute ; anterior and intermediate 

 iihia dilated, foliaceous; posterior tibim with two serrated lines behind ; hemelytra 

 opaque, much longer than the abdomen ; wings hardly longer than the abdomen. 



Length, including the horn, seven-twentieths ; exclusive of the horn, more than 

 one-fifth of an inch. 



The eyes are nearly equidistant between the tip of the horn and of the heme- 

 lytra. It very closely resembles the lanceolata Fabr., an inhabitant of South 

 America, of which it may possibly prove to be a variety. 



The Egg-coverings Described. 

 The pieces of bitter-sweet accompanying the insects received from 

 Utica were nearly covered, on one side with small, white masses, 

 which at a cursory glance might be mistaken for some Coccus insect 

 covered with its farinose secretion. Their appearance is 

 shown in Fig. 80. They are about one-eighth of an inch 

 long by one-tenth broad, attached to the vine by their great- 

 est diameter, and curving upward from it to a height at the 

 summit equal to about one-half their breadth. When touched 

 by the finger, they are found to be quite adhesive and appar- 

 ently waxy, as portions may be drawn away in long threads. 

 Examined carefully, they show something like a lamellose 

 structure, with the layers, ten to fifteen in number, curving 

 slightly toward the anterior and larger end of the mass. If 

 examined more critically under a lens, these apparent lamel- 

 la render themselves into what might be called threads, which 

 Fig. bo. alternate at their meeting on the summit from the 

 — Egg- opposite sides, after the manner of a braid, as shown 

 ings of in Fig. 81, which i)resents an enlarged view of one 

 nmrk^ed of the masses. In some of them, the threads are 

 tree-iiop- j^^i- confluent throughout, but spaces occur between 

 CHENOPA them, through which the bark may be seen. A sec- 

 tion of the mass discloses an interesting structure of 

 the lower portion, suggestive of a vertebral column 

 and connected ribs. 



mX0T.\TA 



on bitter- 

 sweet 

 (Celas- 

 trus) 



Fig. 81.— 



Egg -cover- 



1 n g ; e n- 



„, T ,1 ,T-ij> larsrcdto 



Some of these peculiar masses were sent by me to rroiessor t h re e di- 

 Riley, who identified them as the egg-coverings of the insect "™*^^*^'*- 

 above described, and subsequently gave a brief notice of them in the 

 American Entomologist of October, 1880 (vol. iii, p. 254). 



