26 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 
Race columba (Linneus) Lepeletier de Saint Fargeau 
(Figs. 3, 9, 11, 36 and 38) 
1763 Sirex columba Linnwus. Cent. insec.; p. 30. (Jn Amoen. Acad. ; 
v. 6.) 
1773 =Sirex pennsylvanicus DeGeer. Mem. hist. insec.; v. 3: p. 593; pl. 
30min. 13: 
1773 Sitrex cinctus Drury. Ill. nat. hist.; v. 2: p. 72; pl. 38, f. 2. 
1791 WSirex americana Christ. Naturg. d. Insek.; p. 412. 
1823 Tremexr obsoletris Say. Deser. n. sp. Hym. ins. < West. quart. 
reporter; v. 2: p. 73. [Reprint, Lec. ed.; v. 1: p. 74.] 
1874 Tremex maurus Westwood. Thes. ent. oxon.; p. 116; pl. 21, f. 3. 
Distribution: This form is very common in Quebec, Ontario, 
and northeastern United States, extending south as far as 
Georgia. It is less common in the eastern provinces of Canada. 
It extends into the states of the middle west, but in the Rocky 
Mountains is replaced by the race aureus, although a few spec- 
imens of the typical form have been found in that district. In 
the south it is probably replaced by the following race, with 
which it mingles, however, in the southeast. 
Race sericeus Say 
1823 Tremea sericeus Say. Descr. n. sp. Hym. ins. < West quart. 
reporter; v. 2: p. 73. [Reprint, Lec. ed.; v. 1: p. 73.] 
1846 Tremex servillei Brullé. Hist. nat. ins. Hym.; v. 4; p. 645; f. 2. 
Distribution: Southeastern United States, extending north 
as far as Pennsylvania, and west as far as Utah. 
Race aureus new race 
2. ## Antenne, head, thorax, coxe, trochanters, and femora 
yellowish brown, sutures washed with black; rest of legs, basal 
plates, and abdomen, except as noted, yellow; wings yellow, 
brownish at apex; line on apical margin of third to seventh 
dorsal segments black, broadest mesally, line sometimes inter- 
rupted mesally on sixth and seventh segments, eighth segment 
wholly yellow, or black at apex, sides of ninth segment some- 
times stained black. 
Distribution: Colorado (Clear Creek, Sept. 5, 1898; Berke- 
ley, Sept. 11, 1898; Denver, Sept. 13, 1898; Oct. 15, 1899; Ft. 
