THE CANADIAN ENTOMOLOGIST. 203 



Hungary, and in Weikendorfif, 17 miles from Pressburg, an estate belong- 

 ing to the Prince of Sachsen-Coburg. Dr. A. Fitch quotes both as 

 " Saxe Altenburg and Saxe Coburg, about a hundred miles distant from 

 Hesse Cassel." " It is a strange geographical mistake," says Dr. Th. W. 

 Harris (Corresp. p. 1S9), "to transport those localities to Saxe, whereof 

 Altenburg is 400 miles distant, and Weikendorfif near the border of Hun- 

 gary, about 375 miles distant." Nevertheless Dr. Packard reprints again 

 the strange mistake made by Dr. A. Fitch, as the only proof for the existence 

 of the insect in a district not far distant from Cassel. 



The careful study of Prof. Kollar's report makes it very doubtful if 

 his insect is the Hessian fly. He describes the larva as pale green with a 

 small black dot above, which does not at all agree with the Hessian fly, 

 but very well with the larva of a Chlorops. He states having reared but 

 one fly, but he describes both sexes. His description is simply a translation 

 of those of Th. Say, and not a correct one, as he translates several times 

 fulvous for golden. 



I have never seen the dissertation on the same calamity by Dr. Ham- 

 merschmidt, Vienna. It is printed in a small number for private circula- 

 tion. Prof. J. C. Westwood having received specimens of the pupa in the 

 straw, doubts if it is the Hessian fly. Perhaps the strictures on his report 

 by Dr. A. Fitch (p. 8) are correct, as they have never been refuted by 

 Prof. Westwood. But it is to be remarked that C. destructor is not the 

 only species of the genus having a coarctate pupa. Dr. Fitch (p. 40) 

 has detected one on Agrostis lateriflora, and Mr. Winnertz states the same 

 for C. graminicola from Europe. 



All European works on the Hessian fly, published after 1857, agree 

 that it was then an entirely new pest, never seen before and unknown to 

 all prominent Dipterologists — Wiedemann, Meigen, Zetterstedt, Loew, 

 Bremi, all monographers of this genus, and Schiner. The species was 

 represented in no collection, and apparently not in the Vienna Museum, 

 as Mr. Schiner, 1864, quotes as localities for Europe only those given by 

 Mr. Dana. Nevertheless I am obliged to state that 30 years later, after 

 Mr, Haberlandt, the Hessian fly, C. secalina, has been observed in the same 

 parts of Hungary. 



The only sure statement of the existence of the Hessian fly in Europe 

 is its discovery by Mr. J. Dana in 1834, at Mahon, Toulon and Naples. 

 The identity of this insect with the American species is to be accepted on 

 Th. W. Harris's authority. There was never a better authority, and 



