36 bulletin: museum of comparative zoology. 



Legs dark brownish; wings hyaline. Antennae rather long, moderately 

 stout, the basal joints of the flagellum three or four times as long as thick; 

 those near the apex becoming about quadrate ; the flagellum apparently not 

 annulated. Mesonotum microscopically punctured; basal and middle lateral 

 areas of metanotum distinctly separated. Postpetiole very finely rugulose or 



Fig. 24. — Ichneumon primigenius, sp. now Type. 



shagreened, subopaque. Wings hyaline, the veins fuscous; marginal cell 

 wide, the first section of the radius being nearly one-half as long as the second. 

 Areolet slightly oblique, large and pentangular, its upper side quite long. 

 Discocubital vein evenly curved and without a trace of a stump of a vein. 

 Stigma rather broad, ovate-lanceolate, fuscous; submedian cell in front 

 wings equal in length to the median. 



Described from one specimen, although there is also a second No. 

 2110, M. C. Z., Florissant, Col. (No. 2787, S. H. Scudder Coll.) 

 which is doubtfully the same. 



Type.— No. 2109, M. C. Z., Florissant, Col. (No. 1680, S. H. 

 Scudder Coll.). 



Ichneumon decrepitus, sp. now 



Female. Length about 9 mm. Black, the wings hyaline; abdomen with 

 narrow lighter bands on the apices of the segments. Head very strongly 

 transverse; antennae stout, the basal flagellar joints being two times as long 

 as thick and the apical joints transverse. Scutellum rather strongly convex 

 medially and furnished with a broad transverse depression medially which is 

 not margined laterally. Metathorax areolated, but the areas not well pre- 

 served in the specimen. Petiole of abdomen strongly dilated and wide at the 

 apex, the postpetiole microscopically sculptured and subopaque; second to 

 fifth segments broad; each with a narrow reddish band along the posterior 

 margin. Legs black, varied with brown on the anterior and middle pairs. 

 Wings hyaline, with the slightest trace of infuscation; stigma and veins dark 

 fuscous. Marginal cell long, but with the first section of the radius fully two- 

 thirds as long as the second. Stigma ovate. Areolet large, pentangular, its 

 upper side long. Discocubital vein evenly curved and without trace of a 

 stump of a vein ; submedian cell slightly longer than the median. 



