Tenthredo. HYMENOPTERA. i 73 



Genus II. Tenthredo. 

 Linn. Syft. Nat. page 920. 



The mouth of the Tenthredo is armed 

 with jaws, but has no probofcis. 



The wings are extended, and look as if 

 fwelled, or of a bulky confidence. 



The fting, which is almoft entirely hid 

 within the abdomen, isdentated like a faw, 

 and compofed of two laminse. 



Two fmall tubercules are placed upon 

 the fcutellum at fome diftance from one 

 another. 



The antennas of the Tenthredines, dif- 

 fering very much in their formation and 

 number of their articulations, Linnaeus 

 has divided them into different families, 

 taken from thefe circumftances, as follows : 



1. Thofe with clubbed antennae. 



2. Thofe whofe antennae appear to be one 



continued thread, without articu- 

 lations. 



'3- 



