—se- 

 cludes : "the species o^ Synipetrnm are perfectly distinct ; the remainder 

 of the genera and species will, I believe, stand. " 



In Zoulogist, 1845, vol. Ill, p. IC44, he mentions Sympetnim rtifo- 

 sfigfiia. Entomologist, vol. I, 1841, p. 159 and p. 205, ^S'. nihiciinde i?, 

 mentioned by Mr. Doubleday. 



I find Mr. Newman's genera only twice quoted by British Scientists. 

 Mr. J. F. Stephens, Mandibulata, vol. IV, 1836, gives not as genera but 

 as subgenera or subgroups the four names wiih the short characters of 

 Mr. Newman, and of the new species of the monograph of Svmpetrian 

 he quotes only one. Mr. J. O. Weslwood, in " Synopsis of the Genera 

 of British Insects,'' 1839, p. 48, after the genus LibeUida puts in brackets 

 the four names and one species to each of them. As he has counted for 

 Libellula 1 5 specimens it is evident that he did not accept Newman's 

 genera. 



It is difficult to understand now why some of Mr. Newman's papeis 

 were not acknowledged or at least not mentioned by English Scientists ; 

 however it seems to me out of place to speak here about things happily 

 forgotten fifty years ago. 



Mr. VV. E. Evans British Liljellulina?, London, 1845, uses Dip/ax 

 from the nomenclature of Charpentier, and mentions nowhere Svmpeirum. 

 It is impossible that this work was unknown to Mr. Newman. Zoologist, 



1845, p. 1044, he speaks of the presence "of Mr. Selys in London, en- 

 gaged in examining the cabinets of the London collectors, for the purpose 

 of correctly ascertaining under what names the various species o^ Libellula 

 have been described by British Entomologists." 



Baron De Selys paper, published Annals and Mag. of Nat. Hist., 



1846, p. 217, is reprinted by Mr. Newman, Zoologist, 1846, p. 1522, 

 but nothing is said in favor of his genera, which are not even mentioned 

 in this paper. 



Entomologists nowadays will scarcely be able to understand the diffi- 

 culties, which impede'd the working fifty years ago. There was no con- 

 nection to speak of between Scientists of Great Britain and the continent. 

 In 1843 I found Stephens" Brit. Entom. and Curtis wanting in the libra- 

 ries of Berlin, Vienna, Paris and of the Jardin des Plantes. The only 

 copy in Germany belonged to the Senator von Hayden in Frankfurt a. M., 

 which Erichson was allowed to consult. There did not exist any yearly 

 Record ; the first was published 1834 in Wiegman's Archiv byBurmeister. 

 The first Presidents Address of the Entomological Society by Mr. Children 

 was published for distribution among the members ; the first Address of 

 the Secretary, Mr. Westwood, contains nothing on Sympetnim. The 

 existence of the Entomological Magazine was nearly unknown on the 

 continent. Percheron, Bibliography, p. 225, quotes it "per Walker ihe 



