BRUES: NEW PHYTOPHAGOUS HYMENOPTERA.. 261 



Dineura DAHLBOM. 



Cockerell ( : 06) has already recognized a species of this genus from Florissant 

 to which he gives the name Dineura saxorum, and there is a second one in the 

 present collection. The two may be separated as follows : 

 Transverse median nervure received much before the middle of the first 

 discoidal cell ; second recurrent nervure inserted a considerable distance 



before the tip of the second submarginal cell saxorum Ckll. 



Transverse median nervure received just at or a trifle before the middle 

 of the first discoidal cell ; second recurrent nervure inserted at the ex- 

 treme tip of the second submarginal cell laminarum, sp. nov. 



Dineura laminarum, sp. nov. 



Probably a female. Length 10 mm. Head and thorax very dark and abdomen 

 pale, except at the tip, where it is brownish. Head rather small and narrow. 

 Antennae black, very gradually attenuated toward the tip, reaching as far back 

 as the base of the metanotum. The mesonotum is brown, with a narrow black 

 border anteriorly, and shades into black behind. Scutellum black. Sides of the 

 metanotum apparently pale like the abdomen. Legs, especially the posterior 

 pair, distinctly preserved, apparently brown; tibiae and tarsi of the hind pair 



FIG. 2. Dineura laminarum Brues. Wings. 



darker above. Wiugs hyaline, the veins fuscous or piceous. Humeral cross- 

 vein inserted a short distance before the origin of the basal vein; transverse 

 median nervure inserted just before the middle of the first discoidal cell. Margi- 

 nal cell long and pointed, its cross-vein distinct. First submarginal cell quadrate, 

 the first transverse cubitus and the first section of the cubitus subequal, second 

 section a trifle longer. Second recurrent nervure inserted at the apex of the 

 second submarginal cell, being almost interstitial with the second transverse 

 cubitus. Anal cell with a long petiole. Recurrent nervure in hind wing in- 

 serted three-fifths of the way from the base of the second submarginal cell. 



Type- Wo- 2037, Mus. Comp. Zool., Florissant, Col. (No. 4983, S. H. Scudder 

 Coll.). 



