10 NERVURES. 



base of the stigma to tlie apex called the radial and 

 cubital respectively, and a cell at the bottom of wing 

 the lanceolate cellule, are the most important. 



The following are the designations of the various 

 nervures and cellules adopted in this work, with the 

 various names applied to them by different writers on 

 Tenthredinidce,* and a reference to the plate will make 

 their position clear to the student. 



Nervures. 



1. COSTAL or COSTA (PL X, fig. 1 a) = Radius, Hartig ; 

 Vena marginalis, Foerster ; Randader and Randnerve, 

 Zaddach. 



2. SUBCOSTAL (PI. X, fig. 1 b) Gubitus, Hartig; Vcnu- 

 submarginalis, Foerster; Post-costa or Nervus post- 

 costalis, Thomson ; Unterrandrierve, Zaddach. 



3. MEDIAN (PI. X, fig. 1 c),= Vena media, Hartig, 

 Foerster ; Gubilus or Nervus cubitalis, Thomson. 



4. ANAL (PI. X, fig. ld) = Vena postica, Hartig, 

 Foerster ; Nervus branchialis, Thomson. 



5. ACCESSOEY (PI. X, fig. 1 e) = N. humeralis, 

 Thomson. 



6. INFEEIOE (PL X, fig. 1 /). 



7. RADIAL (PL X, fig. lo) = N.marginaUs, Thomson. 



8. CUBITAL (PL X, fig. l^>) = jV~. submarginalis, 

 Thomson. 



10. BASAL (PL X, fig. II) (behind the figure 8 in 

 left wing letter omitted in right side, see PL XV, fig. 

 1 b) Margino-discoidalis, Andre. 



11. 1st TEANSVEESE MEDIAN (PL X, fig. 1 q, behind 

 figure 12 on left wing, see PL XV, fig. lc)=N. 

 transversus ordinarius, Thomson; Vena transverso-hume- 

 ralis, Foerster ; N. medio-discoidalis, Andre. 



12. 2nd TEANSVEESE MEDIAN (PL X, fig 1 li) =N. Trans- 



* For fuller details on the wing-characters in the Hymenoptera 

 generally see Foerster, Ueber den systematischen Werth des Fliigel- 

 geaders bei den Hymenopteren, 1877, and Andre, Species, i, Ixii, 



et seq. 



