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Published online by Cambridge University Press: 31 May 2012
I have long had upon my desk a partly completed revision of the Calliptenoid series of N. American Acridians. The task I have undertaken in the study of our fossil insects has hitherto prevented its completion ; and as it bids fair to be long delayed, the following notes are published for the assistance of students of that special group, which is remarkably developed in the United States, from whence I have about one hundred species, while Europe scarcely possesses a dozen.
* Proc. Bost. Soc. Nat. Hist., xix., 336.
† Unless my memory is at fault, Mr. Dodge has independently reached the same conclusion concerning these two forms.