'A2S THE CANADIAN KNTOMOLOGI8T. 



6. Venter largely black ; (inside and outside of the hind femora at the 



base black) truncata, Roh. 



Venter largely pale 7. 



7. Scutellum black ; "abdomen smooth and polished" ; posterior femora 



black annulipes, Cress.* 



Scutellum with a pale spot ; abdomen not polished ; posterior femora 

 in part pale 8. 



8. All the femora pale, with a black line above nigricomis, Roh. 



All the femora black all the way around at the base. Provancheri, Roh. 



g. Venter and the sides of the abdomen entirely black 10. 



Venter or the sides of the abdomen pale 13. 



1 o. Coxre entirely black 11. 



Coxae pale beneath at the apex 12. 



11. Hypopygidium with a slightly-rounded notch at the apex ; (posterior 



legs pale above) Bakeri, Roh. 



Hypopygidium not notched, rounded occidentalism Roh. 



12. Sides of the dorsal abdominal segments with pale bands; legs pale 



above, black beneath pluricincta, Nort.* 



Dorsal segments all black ; femora pale beneath. . . .uigricornis, Roh. 



13. Scutellum in part pale 14. 



Scutellum entirely blick ; (central part of the basal plates polished; 



all the femora and the tibiae with a black line above. .Doanei, Roh. 



14. Posterior femora black, with a pale line above and beneath; (stigma 



white at the base) pluricincta, Nort.* 



Posterior femora at the base entirely black ; (sides of the abdominal 

 segments pale; stigma yellow, bordered with a black 



line) albipes, Prov.* 



Posterior femora entirely pale beneath ; stigma black above and pale 

 beneath ; the central part of the basal plates with distinct 

 punctures) truncata, Roh. 



Macrophya Provancheri, n. nom. 



Macrophya albipes, Prov., Nat. Can., XXII, p. 95, 1895, not 

 Tenthredo (Macrophya) albipes, Dahlb., Conspect., Tenth. Scandin., 



1835, P- I2 > n - l ^ 2 - 



It seems quite probable to me that Provancher had confused two 

 species when he described albipes. The male does not seem to be the 

 male of the female described. It differs in having the sides of the abdo- 

 minal segments pale. In all the species of this group which I am familiar 



