JS INTRODUCTORY REMARKS. 



ADDITIONAL REMARKS. 



AFTER the greatest part of the preceding 

 remarks were printed, I met with two authors of 

 whose labours in this class and genus it will be 

 proper to take some notice. I mean Roemer and 

 Latreille. 



In the year 1789, Roemer published a very 

 elegant work^ entitled, '^ Genera insectorum Linnai 

 et Fahricii iconihus illustrata." In this work he 

 gives the following character of the class HymenoP' 

 tera, which adds several circumstances to that laid 

 down by Linneus. 



HYMENOPTERA. JU quatuor, membranaceae, 



nudte, nervis pro alarum 

 magnitudine fortioribus 

 interstinctae. 



Os maxillis duabus validis. 



Stemmata tria. 



Cauda aculeo armata in fe- 

 minis. 



This character is very accurate, except the first 

 member of it, which will not hold good universally, 

 since many Hymenopterous insects are distinguished 

 by wings without veins : its application, therefore, 

 ought to have been restricted by the term sapius 

 OY plerisque, as a general, but not invariably con- 

 stant character. In his genera he has destroyed 



the 



