ICHNEUMON-FLIES — GELINAE : MESOSTENINI 27 



Male: Colored as in the male of B. audax audax except that meso- 

 sternum is almost entirely white. The white orbital mark is some- 

 times almost complete. 



Female: Head, thorax, abdomen, and hind coxa marked with white 

 as in figure 330, c. Flagellum with a white band that is incomplete 

 below; palpi stramineous; front and middle coxae and trochanters 

 whitish, usually blackish at extreme base and sometimes with a small 

 external apical fuscous spot; hind trochanters fulvous, the basal 

 trochanter paler; legs beyond trochanters fulvous, the fifth segment 

 of tarsi and area at articulation of hind femur with trochanter brownish 

 fulvous. There is a pair of posterior median white marks on the 

 mesosternum, which are nearly always absent in the female of B. 

 audax audax. 



Specimens: 9, Pinnacle Peak, Rabun Co., Ga., Aug. 20, 1913 

 (Ithaca). 9, Topeka, Kans., August 16, Popenoe (Washington). 

 9, Green Co., Ky., Aug. 18, 1944 (Dreisbach). 9, Bowie, Md., Aug. 

 27, 1944, H. and M. Townes (Townes). 9, Plummers Island, Md., 

 Sept. 12, 1912, H. S. Barber (Washington), cf, Ann Arbor, Mich., 

 August 1958, H. and M. Townes (Townes). 9, Delaware Co., Ohio, 

 August 1926, D. J. and J. N. KJiull (Columbus). 9, Page, Okla., 

 June 24, 1934, A, E. Pritchard (Ottawa), cf , Highspire, Pa., July 

 30, 1910, W. S. Fisher (Washington). 9, Cheat Mt., 2,000 ft. in 

 Randolph Co., W. Va., August 23 (Pittsburgh). 



This species occurs in the Carolinian fauna. 



3. Baryceros audax (Cresson), new combination 



Front wing of male 6.3 to 8 mm. long, of female 7.5 to 10.5 mm. 

 long; notaulus sharp; upper third of mesopleurum with strong, curved, 

 parallel wrinkles; punctures of mesopleurum rather small, shallow, 

 separated by about 1.5 their diameter; punctures of metapleurum 

 coarse, moderately dense, somewhat confluent with rugosity; hairs on 

 third tergite separated by about 2.5 their length on basal haK of 

 tergite, separated by about their length on apical half. 



There are northern and southern subspecies, differing in the extent 

 of white markings on the head and thorax, as keyed and described 

 below : 



1. Hind orbit of female white except on its upper 0.25±; lower half of meso- 

 pleurum with a curved white stripe, which is sometimes broken into two 

 white spots; range: Austroriparian and Carolinian faunas. 



3a. audax audax (Cresson) 



Hind orbit of female black except sometimes for a white stripe that extends less 



than two-thirds its length; lower half of mesopleurum with two disconnected 



white spots, with one spot, or entirely black; range: AUeghanian fauna. 



3b. audax saundersi (Cresson) 



