ICHNEUMON-FLIES — GELINAE : MESOSTENINI 389 



occupies about 5 segments; legs fulvous, the front coxa and basal 

 0.7 ± of middle coxa ivory, the tarsi a Uttle darkened apically; wings 

 with a faint yellowish brown tinge 



This species is intermediate in some of its characters between the 

 group of species represented by brunnea, alabama, and macula, and the 

 group represented by introita, acadia, and rugosa. Were it not for this 

 intermediate species and a few others in the Neotropics, the genus 

 could be divided into two rather well-marked species groups. 



Specimens: 9, Orange Co., Fla., Apr. 12, 1930, J. E. Sadler (Wash- 

 ington). 9, Atlanta, Ga., Sept. 7, 1944, P. W. Fattig (Washington). 

 49, Takoma Park, Md., May 24, 1942, June 16 and 30, 1943, and Aug. 

 16, 1942, H. and AI. Townes (Townes). 2&, W^ake Co., N.C., Apr. 23, 

 1950, and June 2, 1949, H. and M. Townes (Townes). 2 6", McClel- 

 lanville, S.C., May 15, 1944, H. and M. Townes (Townes). 9, Venus, 

 Greenville Co., S.C, Sept. 22, 1934, H. Townes (Townes). c?, Burr- 

 ville, Tenn., July 1, 1953, Bernard Benesh (Ithaca). 9, Glencarlyn, 

 Va., May 30, N. Banks (Cambridge), cf, Milwaukee, Wis., S. 

 Graenicher (Cambridge). 



This species occurs in the Carolinian and Austroriparian faunas. 



6. Diapetimorpha introita (Cresson) 



Figures 332,g; 333, a 



Mesostenus introitus Cresson, 1872, Trans. Amer. Ent. Soc, vol. 4, p. 162; cf. 



Type: cf, Bosque Co., Tex. (Washington). 

 Mesostenus dejectus Cresson, 1872, Trans. Amer. Ent. Soc, vol. 4, p. 163; ?. Lec- 



totype: 9, Comal Co., Tex, (Philadelphia). 

 Cryptus armatus Ashmead, 1890, Proc. U.S. Nat. Mus., vol. 12, p. 411; cT. Name 



preoccupied by Lucas, 1846. Type: cf , Texas (Washington). 

 Cryptus ashmeadii Dalla Torre, 1902, Catalogus hymenopterorum, vol. 3, p. 562. 



New name for C. armatus. 



Male: Front wing 4.3 to 7.0 mm. long; clypeus wealdy convex, its 

 apical 0.3 impressed; cheek about 0.70 as long as basal width of man- 

 dible; tyloids in the shape of sharp longitudinal carinae which extend 

 the length of 6 or 7 segments; metapleurum with strong, coarse, rather 

 close punctures, with a juxtacoxal carina that is only partly and im- 

 perfectly formed; intercubitus about 3.0 as long as width of radial vein. 



Head and body marked with black and pale yellow as shown in 

 figure 332,g; palpi pale stramineous; antenna black, with a white in- 

 complete band that covers about 5 segments; front leg fulvous, partly 

 pale yellow, its tarsus brownish apically; middle leg fulvous, usually 

 partly pale yellow, its tarsus infuscate but pale basally and at the 

 joints, the apex of its coxa and its first trochanter often brownish 

 above; hind coxa, trochanters, and femur fulvous, the first trochanter 

 fuscous above; hind tibia fulvous, its apical 0.35 ± fuscous; hind 

 basitarsus black, the apical 0.2 to 0.3 usually more or less white; seg- 



