:n'o. 104.] Ill 



mesially by a pale line. Legs pale ; femora darker above ; tibiae 

 brown spotted. 



Pnpa3. — Wing-pads more than one-half as long as the abdomen, 

 shining black, with a broad whitish longitudinal line from their base, 

 bat no"t reaching the tip near their outer margin ; this line con- 

 tinued in j^ellow upon the thorax, dividing each lateral black spot 

 into two — the outer one being simply a marginal line. A yel- 

 lowish dorsal line from the thorax over the abdomen ; segments black 

 except on their posterior margins and at their sides ; femora with 

 two black rings. , 



The imago from the above appeared on June 13th, in three ex- 

 amples, and proved to be the species named above, and commonly 

 known as the " Four-lined leaf-bng." They were the variety &, 

 described by Dr. Fitch as wanting the black dot at the end of the 

 outer black stripe on the wing-covers, on the triangular piece marked 

 off by a suture before the membranous tip. As the three examples 

 were females, it was thought that the absence of the black spot 

 might be a sexual feature, or possibly certaia broods might be thus 

 characterized. In accordance with a request made to Mr. Goff, a 

 number of examples from the garden at the Experiment Station 

 were sent to me. It was found from them that the spot gave no 

 special indication, as of the thirteen males received seven were with- 

 out the spot, and of the seven females, two. 



Mr. Goff states that for the past three years, this insect has ap- 

 peared in very nearly the same place in the garden, but in somewhat 

 greater numbers the present season. Last year (in 1884) it made a 

 serious attack upon gooseberry bushes at the Experiment Station, 

 depleting the tips of the young growth, so that they shriveled, wilted 

 down and died. It was also received from Batavia, ]^. Y., as injur- 

 ing sage in a garden. 



While so abundant and destructive in my own garden in 1881 

 (see 1st Kept. Insects N. Y., p. 267), it has not been injurious since. 



An Experiment with the Thirteen-year Cicada, 



The following paper was read before the Albany Institute at its 

 meeting on October 6, 188.5, with a view of making record of the 

 planting of a brood of the " thirteen-year locust," at Kenwood, near 

 Albany, and of the request that observations be made of the ap- 

 pearance of the winged insect at the time that its development may 

 be expected. 



It is probably known to all the members of the Institute that not- 

 withstanding the rapidity of multiplication in the insect world — 

 very few of the species requiring more than a year for their life- 

 cycle, and many having several generations in the year — one species 

 requires seventeen years for its development from the eo^g to the 

 perfect insect, viz. : the seventeen-year Cicada, or the Cicada septen- 



