14 JOUKNAL, OF ENTOMOLOGY AND ZOOLOGY 



Cacruli'iis is at most a variety of areolatus. It differs onlj- 

 liy liavinn- tlie iiosterior tarsi beyond the middle of the meta- 

 tarsus red, darker on the last segment, and by having only 

 slightly fuscous wings. Edwardsii shows quite as much varia- 

 tion in wing color. 



Key to the Races of Sirex areolatus 



Wings dark violaceous ; legs entirely black or blue-black. 



Rflce areolatus (Cresson) Kirby 

 Wings only .slightly smoky; posterior tarsi beyond the middle of 

 the metatarsus red, apical segment darker. 



Race cacruleus (Cresson) Kirby 



Eace areolatus (Cresson) Kirby 

 (Fig. 22) 



1867 Vroccrus areolatus Cresson, 2 . Cat. of a small coll. Hym. made 



in N. Mex. < Trans. Amer. ent. soc. ; v. 1 ; p. 375. 

 1874 Sirex gracilis Westwood, § . Thes. ent. oxon. ; p. 114; pi. 21, f. 4. 



Known from the mountains of Arizona and New Mexico, 

 Colorado and Northern California. 



Race caeruleus (Cresson) Kirby 



1880 Uroccrus caeruleus Cresson, 9 . Descr. of new N. A. Hym. in coll. 



Am. Ent. Soc. < Trans. Amer. ent. soc. ; v. 8 : p. 34. 

 1898b I'aurKrus areolatus^Show, S 9 ■ Syst. u. krit. Bearb. d. Siric- 



Trib. Siricini. < Wien. ent. Zeit. ; v. 17 : p. 90. 



Known only from ^^ancouver Island. 



Sirex juvencus race cyaneus Fabricius 

 (Fig. 23) 



1781 Sirex cyaneus Fabricius, 2. Spec, insec. ; v. 1 : p. 419. 



1837 Sirex duplex Shuokard, S 5 . Descr. of a n. sp. of Sirex discov- 

 ered to attack spruce fir. < Mag. nat. hist. ; (n. s.) v. 1 : p. 630. 



1841 Urocerus uitidus Harris. Rep.Tns. Mass. inj. to veg. ; p. 391. 



1866 Sirex varipes Walker, 9 . In The Naturalist in Vancouver Island 

 and liritish Coliunbia. By J. K. Lord : v. 2 : p. 342. 



1882 Sirex abbolii Kirby, S. List. Hym. Brit. mus. ; v. 1 : p. 378; pi. 

 15, f. 8. 



1882 Sirex hirsulus Kii-l)y, S . Loc. cit. ; p. 380 ; pi. 15, f. 6. 



