of the North American Orthoptera. 431 



N. Y. 132), in referring it to the genus (Ecanthus > blam- 

 ing Harris for a mistake never made by him, (see below, 

 under (Ecanthus niveus^ p. 432,) who, he says, " was evi- 

 dently unacquainted with the work of De Geer and the 

 characters he assigns to these insects, or he would have 

 been aware of his error, the marks by which this species 

 is distinguished being so plain, and so explicitly stated by 

 that author." How was it possible for so acute an ob- 

 server as Dr. Fitch to overlook the close resemblance 

 between De Geer's figure (save in the length of the wings), 

 and our common Nemobius vittatus, Harr., and refer the 

 species to (Ecanthus^ especially when (Ecanthi of the 

 same sex are figured upon the same plate ! Moreover, is 

 it not " explicitly stated by that author," in his description 

 of G. fasciatus, that the posterior femora are stout and 

 very wide, that the tibias of the same pair have long 

 spines, and that the head and thorax are more hairy than 

 ordinarily ? Are these characters of (Ecanthus^ or of Ne- 

 mobius and Gryllus? Burmeister has already intimated 

 that the relations of this very species are with Gryllus 

 rather than with (Ecanthus. (Burm., Handb. II. 733.) 



(ECANTHUS, SERVILLE. 



* 1. CE. NIVEUS, Serv., Ann. Sc. Nat. ; XXII. 135. (1831.) 



(Ecanthus niveus, Serv., Hist. Nat. d. Orth. ; 361. (1839.) 



" Harr., Cat. Ins. Mass. ; 56. (1835.) 



" " Harr., Report, 3d e.d. ; 154, figs. 71, 



72. (1862.) 



" " Fitch, 3d Report, Noxious Ins. N. Y. ; 



131. (1856.) 



Gryllus niveus, De Geer, Mern. ; III. 522, pi. 43, fig. 6. 



(1773.) 



Oliv., Enc. Meth. ; IV. 637. (1791.) 



(Ecanthus cylindricus, Say Mss., and Harr., Cat. Ins. 



Mass. ; 56. (1835.) 



