340 BRUES. 



Wings hyaline. Radial vein long, nearly equal to the distance from 

 the root of the wing to the origin of the basal vein, which arises some 

 distance before the small linear stigma; the latter narrow and twice 

 as long as broad; basal vein short, nearly straight; transverse median 

 vein strongly curved, one-third longer than the basal vein. 



One specimen, without number. 



This species may possibly belong to one of the groups recently 

 segregated from Epyris, agreeing well with Monepyris KiefTer except 

 that there is no third closed basal cell in the wing. As it does not 

 agree perfectly with any of these I have preferred to let it remain in the 

 old genus. 



Sierola Cameron. 



The three amber species all have a small closed discoidal cell, and 

 may possibly represent a distinct genus. 



Key to the Amber Species. 



1. Prothorax more than one and one-half times as long as the mesonotum; 



antennae stout; joints 4-10 of the flagellum quadrate; head above with- 

 out bristly hairs S. simplex. 



Prothorax and mesonotum of more nearly equal length; antennae more 

 slender; head above with a series of long bristly hairs 2. 



2. Slender species; eyes oval, nearly twice as long as broad; mesonotum dis- 



tinctly longer than the prothorax S. setigera. 



Stout species; eyes nearly circular, but little longer than broad; mesono- 

 tum distinctly shorter than the pronotum S. crastina. 



Sierola simplex sp. now 



9 . Length 3 mm. Body apparently entirely dark colored, proba- 

 bly black or aeneous, the head and thorax thinly clothed with Aery 

 short hair. Head evenly convex in front, its surface finely punctulate. 

 Clypeus with a very prominent, but short median carina which extends 

 on to the front above the clypeal suture for a distance equal to the 

 length of the pedicel of the antenna. Eyes oval, nearly twice as long 

 as broad, thinly pubescent. Ocelli in a small triangle, close to the 

 occipital margin of the head. Mandibles moderately stout, their 

 apices not visible. Maxillary palpi 5-jointed. Antenna? 13-jointed, 

 of nearly equal thickness throughout, slightly stouter before the 

 middle of the flagellum; scape stout, bent, broadened at the apex; 

 pedicel and first two flagellar joints each of nearly equal length, the 

 second one broader; third stouter, fourth and following quadrate, 



