I 



I 



BY ROWLAND E. TURNER. 259 



c'^. The triangular truncation of the clypeus white. 

 a'^. A white line on the anterior margin of the prothorax. 

 a*. Clypeus without a median carina; with a minute 



tubercle on each side. E. tuberculata Sm. 



b^. Clypeus with a median carina. E. vitripennh Sm. 



h^. Prothorax wholly black. Length 8mm. E. osculans, n.sp. 



ii. Clypeus without a triangular truncation at the apex. 



A, Abdominal segments slightly constricted near the base. 

 a. Wholly black. 



a'^. Thorax strongly punctured. 



a^. Median segment with a broad low median carina at 



the base. E. tenuipalpa, n.sp. 



6^. Median segment without a carina. Length 11 mm. 



E. (iispar Westw. 



h'^. Ttorax finely punctured. Length 6 mm. E. tenehrosa, n.sp. 



h. Postscutellum white. 



a2. Clypeus white, antennae black. Length 5 mm. E. parca, n.sp. 



h'^. Clypeus black, antennae fuscous. E. inconspinia, n.sp. 



B. Abdominal segments not constricted. 



a. Clypeus with a median carina from base to apex, 



a'^. Head and five basal segments of abdomen ferruginous. 



Length 13 mm. E. ferrugineiceps, n.s-g. 



6'2. Light castaneous, two apical segments of abdomen black. 



Length 12 mm. E. castaneicejis, n.sp. 



5 $ . i. Abdomen subcylindrical. 



a. Black, prothorax and two basal segments of the abdomen 



ferruginous. E. luckhda, n.sp. 



b. Wholly castaneous. 



ffc2. First abdominal segment truncate, with a minute spine 



at each angle, E. scutellata, n.sp. 



b'^. Pygidium with minute lateral spines and a tuft of hair at 



the apex. E. fulvicostalis, n.sp. 



ii. Abdomen cylindrical, 



A. Median segment longer than the prothorax. 



a. With an impressed median longitudinal mark on the apical 



half of abdominal segments 2-4. 

 a^. First abdominal segment short, much broadened from the 



base. E. tuberculata Sm. 



62. First abdominal segment not short, not much broadened 



from the base. E. tenebrosa, n.sp. 



b. Without an impressed longitudinal mark on segments 2-4. 



a-. Delicately punctured, mandibles bidentate. E. dispar Westw. 



