INTRODUCTORY REMARKS, 

 the antennas ; according to this principle, they 

 ought to constitute so many diiferent genera ; 

 and if it be applied to Apis, instead of five genera 

 into which Fabricius has divided it, it should be 

 frittered into eighteen, from differences observable 

 in the iyistrumenta ciharia of its numerous families. 

 But to proceed with our author. The genera he 

 has given are arranged in the following order. 



1. Urocems, after GeofFroy, taken from Sirex, 

 Lin. 2. Sirex, taken from Sirex and Tenthredo, 

 Lin. 3. Tenthredo, Lin. 4. Cinihex, Olivier. This 

 is the Cralro of GeofFroy, and consists of those 

 insects which constitute Linneus's first family of 

 Tenthredo.. 5. Proctotrupes, Latr. If I am not mis- 

 taken in the insects which INI. Latreille intends by 

 this genus, it is a distinct one : I have always been 

 at a loss where to reler the species that belong to 

 it. I do not know that any other author has 

 noticed any of them. 6. Cj/nips, after GeofFroy, 

 this genus takes in no genuine Cynips, but in- 

 cludes a large pro]oortion of the Ickneumones Mi- 

 nuti of Linneus, the Eulophus of Geoffi"oy, and 

 Chalcis of Fabricius. It would be a good genus 

 without Chalcis, but it should have another name, 

 as Cynips ought to be continued to the gall nut 

 insects. 7. Leucospis, Fab. 8. Diplolepis, Geoff. 

 Cynips, Lin. g. Diapria, Latr. taken from the 

 Ichneumones Minufi, Lin. 10. Orussus, Latr. 

 Sphex, Scop. An Oryssus, Fab. ? 11. Ichneumon, 

 Lin. 12. Gasteniption, Latr. Ichneumon, Lin. 



This 



