BRUES: PARASITIC HYMENOPTERA. 



57 



men. Wings very slightly infuscated ; stigma dark brown and veins rather 

 light; stigma elongate, but distinctly angulate below. Marginal cell short 

 and broad, fully twice as wide as the stigma and twice as long as thick; 

 cubitodiscoidal cell short; areolet open; median and submedian cells of 

 equal length. 



Type.— No. 2214, M. C. Z., Florissant, Col. (No. 8893, S. H. 

 Scudder Coll. 



There is also a second No. 2215, M. C. Z., Florissant, Col. (No. 

 4671, S. H. Scudder Coll.) which is not so well preserved, but possibly 

 the same species. 



Mesoleptus exstirpatus, sp. nov. (Fig. 42.) 



Sex? Length 6 mm. Black, the abdomen beyond the second segment 

 reddish brown; legs yellowish, the posterior pair darker, more brownish. 

 Wings subhyaline. Head transverse, its surface smooth and highly polished. 

 Antennae moderately stout, of even thickness, the first joint of the flagellum 

 twice as long as wide; following subequal, but gradually shortening; those 

 beyond the middle but little longer than wide, apex missing. Thorax smooth 







/ 8 



Fig. 42. — Mesoleptus exstirpatus, sp. nov. Type. 



and shining; metathorax areola ted, apparently completely so. Abdomen 

 as long as the head and thorax combined ; slender, petiolate. Petiole evenly 

 arcviate, with two pairs of longitudinal carinae which extend for its entire 

 length. Wings subhyaline, the stigma narrowly oval, fuscous; veins fuscous. 

 Sections of the radius all slightly curved; first about three-fourths the length 

 of the third; areolet large, regularly pentangular; median and submedian 

 cells of equal length ; discocubital vein regularly and quite strongly curved. 



Described from one specimen collected by Mr. S. A. Rohwer at 

 Station 14. Type in the Amer. Mus. Nat. Hist. A typical species 

 of this extensive genus. 



