BRUES: PARASITIC HYMENOPTERA. 



95 



positor exserted, but broken off about one millimeter from its base. Wings 

 hyaline, the stigma and venation pale yellowish brown, the former rather 

 broad, ovate, giving off the radial vein at its middle; marginal cell long, lan- 

 ceolate; first discoidal cell distinctly petiolate; second cubital cell strongly 

 narrowed above, its radial side only one-half as long as the cubital one. Re- 

 current nervure and first transverse cubitus interstitial, forming a straight 

 second discoidal cell completely closed; discoidal vein broken very near 



line; 



the bottom; submedian cell distinctly longer than the median. 



Type.— No. 2339, M. C. Z., Florissant, Col. (No. 13,360, S. H. 

 Scudder Coll.). 



This species reminds one both in form and color of certain species of 

 Macrocentrus, but the short, high, second submarginal cell which is 

 much contracted above does not agree with that genus. Unfortunately 

 as is almost always the case, cephalic, thoracic, and pedal characters 

 are not well enough preserved to permit of its positive location in any 

 tribe, and the present generic reference can be considered as provisional 

 only. 



Blacinae. 



The following species of Calyptus is the only fossil species to be 

 described in this group. 



Calyptus w 7 ii.mattae, sp. nov. (Fig. 78.) 



Female. Length 4 mm. 

 Ovipositor at least 2.5 

 mm. Dark colored, prob- 

 ably piceous or fuscous, 

 the anterior part of the 

 thorax below and the 

 basal part of the abdomen 

 lighter, more yellowish. 

 Abdomen slightly longer 

 than the head and thorax 

 together, apparently 

 gradually narrower from 

 beyond the middle to the 

 sessile base. Wings hya- 

 line, or very slightly 

 tinged with brownish ; 

 stigma and veins fuscous, 

 the latter cvcl, :mly mod- 

 erately broad, the radius 

 originating beyond its 



r'. 



Fig. 78. — Calpytus wilmattae, sp. nov. Type. 



