20 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 
This species is common in the Canadian life zone and may 
extend into the Hudsonian. In the east it extends a little 
farther south along the Alleghanies than does flavicornis. In 
the west it extends, so far as known, only slightly south of the 
Canadian border; south of this it is replaced by the very 
closely allied californicus, which indeed has often been looked 
upon as simply a variety. 
In the southeast it is replaced by taxodii, to which it is 
closely related. 
Urocerus californicus Norton 
(Figs. 7 and 33) 
1869 Urocerus albicorms var. californicus Norton, 9°. Cat. deser. 
Tenthred. and Uroceride N. A.< Trans. Amer. ent. soc.; v. 2: 
p. 360. 
1880a Urocerus fulvus Cresson, g. Descr. of new Hym. in coll. Amer. 
ent. soc. < Trans. Amer. ent. soc.; v. 8: p. 35. 
1882 Sirex flavipennis Kirby, ¢. List. Hym. Brit. mus.; v. 1: p. 380; 
pl. 15, f. 10. 
Distribution: From Vancouver Island south along the coast 
to the Coastal Mountains of northern California, and along 
the Sierras to Tulare County, south along the Rockies through 
Idaho, Utah and Colorado to New Mexico, Arizona, and Mexico. 
Urocerus taxodu (Ashmead) 
(Figs. 2 and 29) 
1904 Sirex tarodii Ashmead, ¢ 2. Deser. of four new sp. horn-tails. 
< Can ent.; v. 36: p. 63. 
Bred from cypress (Taxodium distichum). 
Distribution: Tryon, North Carolina; and Decatur County, 
Georgia. 
The writer took a typical female specimen flying about 
eypress on Spring Creek, fourteen miles from Bainbridge in 
the extreme southwestern part of Georgia, October 1, 1910. A 
male taken the day previous within a half mile of the same 
place, also flying about a cypress tree, undoubtedly belongs to 
the same species, but was largely destroyed by ants before it 
