56 On the Locust of North- America. 



perfect, and in some respects erroneous, were deemed 

 too interesting not to be presented to the public. 

 The Editor has, for several years, devoted a great 

 deal of attention to the natural history of this insect. 

 He designs to publish an extensive memoir on the 

 subject. Meanwhile, it will be sufficient to observe, 

 on the paper communicated by Mr. Reichel, that the 

 locust, to which it principally refers, is the Cicada 

 Septendecim of Linnaeus (the Tettigonia Septende- 

 cim of Fabricius) ; that these insects appear to be 

 very numerous every year, in some part or other of 

 the United-States, but that they do not, in general at 

 least, return in the same district of country, in less 

 than sixteen or seventeen years. There is no good 

 foundation for the assertion, that the locust continues 

 for a long time in the egg-state ; but it seems certain, 

 that it is often wrapped up in the garments of a pupa, 

 or chrysalis, for the long term of sixteen years ! 



The Editor. 



XVI. Additional Observations on the Cicada Septen- 

 decim. By the late Mr. John Bartram. From 

 a MS. in the possession of the Editor. 



ON the 10th of May, 1749, in the morning, 

 I observed (in the neighbourhood of Philadelphia) 

 abundance of Locusts, just escaped from their skins. 

 Some had turned of a dark brown ; others white, 

 with their wings moist. Some were creeping out ; 

 some were on the grass, on the bushes, rails, and 

 bodies of trees. 



