ART. 16 NORTH AMERICAN ICHNEUMON-FLrES — CUSHMAN 25 



beginning on fourth joint and centering on about seventh or eighth ; 

 anterior margin of pronotuni and dorsal swellings; two lines on 

 mesocutum; scutellum and basal carinae; postscutellum ; subalar 

 tubercle and a large mark below speculum; tegulae; large spots on 

 upper and lower divisions of metapleurum; apophyses and usually 

 a spot on each side of basal middle of propodeum ; first tergite except 

 a spot on disk of postpetiole, and broad apical bands on all other 

 tergites except last; legs testaceous, hind tarsi stramineous, black 

 at apex ; w- ings hyaline, venation blackish, stigma stramineous. 



Male. — Except sexually essentially like female, but without anten- 

 nal annulus, eyes convergent below, front legs paler, and hind legs 

 except coxae darker; hind trochanters more or less, upper surface of 

 femur frequently, tibia except base, which is whitish, and tarsus 

 piceous to black. 



The most notew^orthy variation is in the comparative width of the 

 female abdomen; in the types of dya7% which were parasitic in the 

 short oval cocoons of Al^rocUa sJossoniae (Packard), the abdomen 

 is especially broad. 



The type of texanics is from Texas (Belfrage) and those of dyari 

 from Florida, reared by Dr. H. G. Dyar, as was also one other male. 

 The other National Museum specimens are as follows: Florida— 

 Gainesville, September 13, 1923, T. H. Hubbell (one specimen) ; Mic- 

 cosuke, April 27, 1924, T. H. Hubbell (one specimen) ; Biscayne Bay 

 (one specimen) ; one specimen labelled simply Florida. Louisiana — 

 Crowley, August 29, 1911, E. S. Tucker (one specimen). Alabama — 

 Pysiton, Clay County, H. H. Smith (two specimens). Texas — Piano, 

 October, E. S. Tucker (two specimens) ; Victoria, April 28, 1904, W. 

 E. Hinds (one specimen). 



CRYPTUROPSIS AUDAX (Cresson) (new combination) 



Fig 2f 



Mcsostenus audax Cresson, Can. Eut., vol. 10, 1878, p. 207, female. Type. — No. 



1172, Acad. Nat. Sci. Phila. 

 Mesostcnus exaptus Cresson, Can, Ent., vol. 10, 1878, p. 208, female. Type. — No. 



1176, Acad. Nat. Sci. Phila. 

 Mesostenidea exapta (Cresson) Vibkeck, Hym. Conn. (191G) 1917, p. 329. 



Discussion based on types of both names, a specimen in the 

 National collection compared with both types by the writer, and 

 seven other females. 



The two types differ apparently only in size and coarseness of 

 sculpture and exhibit minor differences in extent of color. The speci- 

 men compared with the types is intermediate in these respects between 

 the two. 



Female. — Length 7-14 mm. 



Differs from texanus essentially as follows. Face slightly narrower 

 than frons, barely widening below, eyes hardly at all sinuate opposite 



5927—29 4 



