ICHNEUMON-FLIES — GELINAE : MESOSTENINI 395 



Specimens (38 cf, 269): From District of Columbia (Washington); 

 Florida (Gainesville, Gulf Hammock, and Tarpon Springs); Georgia 

 (Atlanta); North Carohna (Durham, Kill Devil Hills, New River, and 

 Wake Co.); South CaroUna (Columbia, Easley, and McClellanville) ; 

 Texas (Hidalgo, Navasota, and San Antonio); and Virginia (Lake 

 Drummond and Martinsville). 



Collection dates are from mid-spring to early fall. Unusually early 

 and late seasonal records are: February 25 at Hidalgo, Tex.; March 24 

 at Gainesville, Fla.; April 3 at San Antonio, Tex.; May 13, 15, 16, 

 and 17 at McClellanville, S.C; September 20 to 30 at New River, 

 N.C.; and September 21 at Columbia, S.C. 



We have found the species in moderately dense deciduous woods. 

 The habitat and flight habits are like those of Lymeon orbum. 



This species occurs in the Austroriparian fauna. 



2. Lymeon orbum (Say) 



Figures 333, d,e 



Cryptus orbus Say, 1836, Boston Journ. Nat. Hist., vol. 1, p. 231 (Leconte ed., 



vol. 2, p. 688) ; [ 9 ]. Type: 9 , Indiana (destroyed). 

 Mesostenus diligens Cresson, 1878, Canadian Ent., vol. 10, p. 207; 9. Type: 



9, Illinois (PMIadelphia). 

 Lymeon annulicornis Ashmead, 1894, Insect Life (U.S. Dep. Agr.), vol. 7, p. 243; 



9. Type: 9, Utica, Miss. (Washington), 



Front wing of male 3.5 to 5.5 mm. long, of female 4.3 to 8.2 mm. 

 long; clypeus convex, not prolonged into a conical point; lateral lobe 

 of mesoscutum sparsely punctate, the punctures moderately dense 

 anteriorly; discoidella present; thyridium of second tergite transverse. 



Male: Head, body, and hind coxa marked with black, white, and 

 fulvous as in figure 333, d; antenna black, the scape often brownish in 

 front; palpi white; front and middle trochanters white; front and 

 middle femora and tibiae pale fulvous; front tarsus very pale fulvous, 

 its fifth segment mostly fuscous; middle tarsus brown, stramineous at 

 the joints; hind trochanters fuscous or the second trochanter bro^vnish 

 fulvous; hind femur fulvous, its apex weakly infuscate; hind tibia 

 brownish fulvous, its basal 0.15 and apical 0.3 fuscous; hind tarsus 

 white, the basal 0.3 ± of first segment and all or most of its last seg- 

 ment black; wings hyaline. 



Female: Head, body, and hind coxa marked with black, white, and 

 fulvous as in figure 333, e; basal two segments of palpi white, the rest 

 infuscate; antenna black, with a white band that covers about 7 seg- 

 ments; front and middle coxae and first trochanters whitish with some 

 pale fulvous areas, the rest of front and middle legs pale fulvous, the 

 last two segments of their tarsi fuscous; hind coxa fulvous, usually 



