412 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 6 



marks were not found. I think, however, that both kinds were made 

 *by the same species. 



Twice I have run across eggs of this kind in the skin of apples, once 

 in 1908 and again in 1909. In 1909 (Journ. Econ. Ent.) I described 

 the eggs found the fall before, referring them doubtfully to Ceresa 

 taurina Fitch. The work of Hodgkiss (1910), however, has shown 

 that the eggs of Ceresa taurina are placed in a quite different situation, 

 and my more recent observations show that the eggs of Gypona odo- 

 lineata are similar to, and probably the same as, the eggs found in the 

 skin of the apple. 



No blackened portion of the egg is mentioned in my notes of No- 

 vember, 1908, but in November, 1909, when similar eggs were found 

 in a Ben Davis apple, the black mark on the egg at the slit was quite 

 distinct. 



Jassid eggs of this description have been referred to two species of 

 Membracids, first to Ceresa huhalus Fabr., by Riley (1873) and later by 

 the same writer (1892) to Ceresa taurina Fitch. Hodgkiss (1910) has 

 shown that the eggs of Ceresa taurina are deposited in the buds of apple 

 trees, and refers the egg pouches figured by Riley to some of the large 

 leaf-hoppers, naming Gypona cana Burm., and Gypona octolineata Say. 



An excellent illustration of these eggs may be found in the Penn- 

 sylvania Zoological Bulletin, vol. 5. No. 3. plate ix., drawn by W. R. 

 Walton. Here the eggs are wrongly referred to Ceresa huhalus, in 

 spite of Riley's later correction (1892). 



The Nymphs. I have twice observed nymphs hatching from eggs 

 which were probably of this species. At any rate I could not distin- 

 guish any differences that would separate them. At Shenandoah May 

 10, 1909, I found a nymph just emerging from an egg deposited in the 

 bark of a Carolina poplar tree. Again at Burlington, Iowa, April 

 15, 1910 (a very early spring) I found a nymph emerging from an egg 

 placed in the bark of a crabapple tree. These nymphs were both pale 

 orange in color, with long antennae, reaching beyond the tip of the 

 abdomen. They were also pale along the median dorsal line. 



The following description of the larva is taken from Osborn and 

 Ball. "The larvae very strongly resemble the adults. The head is 

 abruptly narrowed in front of the eyes but projected centrally. The 

 antennae are very long, the basal joint nearly as long as the vertex, 

 while the bristle reaches to the middle of the alxlomen. The abdo- 

 men is long, rather slender, color green." 



In the insectary cages the larv* were found usually feeding along 

 the green stems of apple twigs, or in the axils of the leaves. 



The Adults. I can add nothing to previous accounts concerning 

 the adult insects. 



