LIST OF DIPTERA. 667 



bloom : abdomen brassy, green at the base, tinged with green 

 on each side, covered with white "bloom beneath ; tip black ; appen- 

 dages tawny ; scales white, bordered with black : legs tawny ; tips 

 of feet pitchy ; hind feet and tips of hind shanks black : wings co- 

 lourless ; wing-ribs and poisers pale tawny ; veins black. Length 

 of the body H line ; of the wings 3 lines. 



a. North America. Presented by the Entomological Club. 



Dolichopus irrasus, n. s., fern. Cyaneus, abdomine aneo, antennis 

 nigris, pedibus fulvis, tarsis piceis, alis cinereis fusco subvit- 

 tatis. 



Body deep blue, beset with black hairs and bristles : head co- 

 vered in front with a silvery bloom: eyes red: mouth and feelers 

 black : chest covered with ferruginous bloom ; sides and chest 

 covered with white bloom : abdomen dark bronze, slightly covered 

 with white bloom, not longer than the chest: legs tawny, clothed 

 with black hairs and bristles ; feet pitchy : wings gray, brownish 

 along the borders of the veins ; wing-ribs and veins black ; fourth 

 longitudinal vein slightly bent ; poisers dark tawny. Length of the 

 body 1 line ; of the wings 2 lines. 



a. Florida. Presented by E. Doubleday, Esq. 



Ortochile, Latreille. 



Ortochile derempta, n. s. Viridis, thoracis disco cupreo, abdomine 

 purpureo, basi apiceque cyaneo-viridi, lateribus aureo-viridibus, 

 antennis nigris, pedibus fulvis, femoribus viridibus, alis sub- 

 cinereis. 



Body green : head and chest beset with black bristles : eyes 

 and mouth black : feelers black ; third joint very short, round ; 

 bristle proceeding from its tip : disk of the chest copper-coloured : 

 abdomen purple, clothed with black hairs, bluish green at the base 

 and at the tip, golden green along each side : legs tawny, clothed 

 with short black hairs ; hips and thighs green : wings slightly 

 gray ; wing-ribs and poisers tawny ; veins pitchy. Length of the 

 body 1 J line ; of the wings 3 lines. 



a. North America. Presented by the Entomological Club. 



3n2 



