468 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 paut 3 



Specimens (12 cf, 149): From Alabama (ThomasviUe) ; Connecticut 

 (Stamford) ; District of Columbia ; Florida (Homestead, Paradise Key 

 in Everglades National Park, St. Augustine, and Tarpon Springs) ; 

 Georgia (Atlanta); Maryland (Plummers Island); New Jersey 

 (MoorestoAvn, Ramsey, and Tabernacle); New York (Mosholu in 

 New York City) ; North Carolina (Raleigh and Southern Pines) ; Ohio 

 (Hocking Co.) ; Pennsylvania (Dunbar) ; South Carolina (McClehan- 

 ville and Mountain Lake in Greenville Co.) ; Tennessee (Grassy Cove 

 in Cumberland Co.); and Virginia (Dunn Lormg and Fluvanna Co.). 



Dates of collection are from mid-spring to mid-fall. Unusually 

 early and late dates are: April 7 and 12 at Paradise Key, Fla. ; April 12 

 at St. Augustine, Fla.; April 20 at ThomasviUe, Ala.; May 12 at 

 Raleigh, N.C.; September 11 in Hocking Co., Ohio, and at Dunn 

 Loring, Va.; September 23 at Homestead, Fla.; and October 3 at 

 Southern Pines, N.C. 



This species is found in the Austroriparian fauna and occurs spar- 

 ingly in the Carolinian fauna. 



2. Genus Acroricnus 



Figures 323,b; 329,o 



Acroricnus Ratzeburg, 1853, Die Ichneumonen der Forstinsecten . . . vol. 3, p. 

 92. Type: {Acroricnus schaumii Hatzehurg) — stylator (Thunberg); mono- 

 basic. 



Xenodocon Foerster, 1855, Verli. Naturli. Ver. Rheinlande, vol. 12, p. 237. 

 Type: (Xenodocon ruficornis Foevster) = seductor (Scopoli) ; monobasic. 



Macrobatus Holmgren, 1856, Svenska Vetensk. Akad. Handl., vol. 75, p. 50. 

 Type: {Cryptus macrobatus Gravenhorst)= s^y/aior (Thunberg); monobasic. 



Li/ioceras Taschenberg, 1865, Zeitschr. Gesam. Naturwiss. Halle, vol. 25, p. 8, 105. 

 Type: {Cryptus macrobatus Gv&venhorst)^^ stylator (Thunberg); designated 

 by Viereck, 1915. 



Leptobatides Buysson, 1896, In Andr^, Species des hym^nopteres d'Europe and 

 d'Algerie, vol. 6, p. 678, pi. 3. Type: Leptobatides abeillei Buysson; mono- 

 basic. 



Agathobanchus Ashmead, 1900, Proc. U.S. Nat. Mus., vol. 23, p. 97. Type: 

 {Banchus aequatus S{iy) = stylator aequatus (Say); original designation. 



Front wing 6.5 to 13.5 mm. long; cheek about 0.8 as long as basal 

 width of mandible; occipital carina complete or its lower end not 

 quite reaching hypostomal carina; apical carina of propodeum present, 

 weak, complete or almost so; propodeum beyond basal carina punctate, 

 not predominantly with transverse wrinkling; last segment of hind 

 tarsus with two or several strong bristles on the under side at the 

 middle; areolet quite large, roughly pentagonal, too narrow and oblique 

 for a regular pentagon; first abdominal segment slender, a little 

 widened apically, its spiracle near the apical 0.38; ovipositor tip de- 

 pressed, weakly sagittate in dorsal view, the tips of ventral valves 



