382 



SIRICID^l. 



34. Sirex tricolor. 



Urocerus tricolor, Prov. Nat. Can. i. p. 17, ii. p. 77, fig. 10 (1869-70). 

 Hah. Canada. 



35. Sirex cressonii. 



Urocerus cressonii, Nort. Proc. Ent. Soc. Phil. iii. p. 16 (1861) ; id. 

 Trans. Amer. Ent. Soc. ii. p. 361 (1869). 



Hah. United States. 



36. Sirex tarsalis. 



Urocerus tarsalis, Cress. Trans. Amer. Ent. Soc. viii. p. 52 (1880). 

 Hah. Washington Territory. 



37. Sirex gracilis. 



Sirex gracilis, Westiv. Thes. Ent. Oxon. p. 114, pi. xxi. fig. 4 (1874). 

 Hah. North America. 



38. Sirex caudatus. 



Urocerus caudatus, Cress. Proc. Ent. Soc. Phil. iv. p. 247 (I860). 



Hah. North America*. 



a. S • United States. 



h. 3 . Nova Scotia. Lieut. Kednian. 



c-e. 2 • St. Martin's Falls, Albany Kiver, Dr. Barnston. 



Hudson's Bay. 

 /. 2 • California. Voyage of H.M.S.' Herald.' 



39. Sirex melancholicus. 



Sirex melancholicus, Westiv. Thes. Ent. Oxon. p. 116, pi. xxi. fig. 8 

 (1874). 



Hah. North America. 



40. Sirex morrisoni. 



Urocerus morrisoni, Cress. Trans. Amer. Ent. Soc. i. p. 35 (1880). 

 Hah. Colorado, Utah, Washington Territory. 



* Closely allied to S. spectrum, L. 



