INTRODUCTION. 79 



rales and urbicolce; the former having the wings 

 marked with obscure spots, the latter for the most 

 part with transparent spots. 



In his earlier works, Mantissa and Species, Fa- 

 bricius made no important change on the Linnaean 

 method; but the many additional species which 

 had come to his knowledge when he drew up his 

 Systema glossatarum, led him to establish many new 

 genera, and remodel the arrangement of the old 

 ones. This method consists of forty-one genera, 

 most of which have been adopted by subsequent 

 authors ; but it is less complete than it might other- 

 wise have been rendered, owing to the death of the 

 author before it was finished. Latreille did not 

 deviate materially from the Fabrician method, adopt- 

 ing nearly all the genera ; but he did not derive the 

 distinctive characters exclusively from the antennas 

 and palpi, as the Danish entomologist had done, 

 but had recourse to other parts of structure, and 

 likewise judiciously took into account the peculiari- 

 ties of the caterpillar and chrysalis. Several ar- 

 rangements were proposed subsequent to or contem- 

 poraneous with that of Latreille, such as those of 

 Lamarck, Dumeril, Dalman, &c. but most of them 

 are of little importance. The last mentioned indi- 

 vidual, however, appears to have been the first to 

 apply to actual practice, in his description of the 

 lepidoptera of Sweden, characters derived from the 

 neuration of the wings, the value of which were 

 first pointed out by Mr. Jones, in a paper in the 

 Linnaean Transactions, published in 1794. Godart. 



