642 LIST OF DIPTERA. 



Psilopus contristans, Meig. Dipt, iv. 37, 4. Macq. Hist. Nat. 



Dipt. i. 449, 3. Dolichopus contristans, Wied. Zool. Mag. 



i. 72, 19. 

 a. England. 



Psilopus lugens, Meig. Dipt. iv. 38, 6. Macq. Hist. Nat. Dipt. i. 



449, 5. 

 a. England. 



Psilopus equesiris, Wied. Auss. Zweif. ii. 214, 3. Musca eques- 

 tris, Fabr. Syst. Ent. 782, 50. Ent. Syst. iv. 340, 119. Doli- 

 chopus equestris, Fabr. Syst. Antl. 268, 7. 



a. Brazil. 



Psilopus sipho, Wied. Auss. Zweif. ii. 218, 9. Macq. Dipt. Exot. 



ii. 119, 11, pi. 21, /. 1. Dolichopus sipho, Say, Journ. £cad. 



Philad. iii. 84, 1. 

 a. Massachusetts. From Prof. Sheppard's collection. 



Psilopus diffusus ? Wied. Auss. Zweif. ii. 221, 17. 

 a. Trenton Falls. Presented by E. Doubleday, Esq. 



Psilopus caelestis, n. s. mas. Viridissimus, capite cyaneo purpureo- 

 que vario, abdominis lateribus cupreo vittatis, antennis pedibusque 

 flavis, tarsisfulvis, alis limpidis ad costam fuscis. 



Body intense green : head bright bluish green, varied with 

 purple, golden green in front, much broader than the chest : eyes 

 red: mouth pale tawny : feelers pale yellow; bristle black, longer 

 than the body, with a knob at the tip : sides of the chest and breast 

 covered with white bloom : abdomen with a bright copper stripe 

 along each side ; appendages tawny : legs pale yellow, adorned with 

 parallel rows of very short black bristles, and clothed with longer 

 hairs and bristles ; feet dark tawny, pitchy towards the tips : wings 

 colourless, dark brown along the fore border, paler, and including a 

 colourless streak on the disk ; wing-ribs and poisers tawny ; veins 

 black. Length of the body 3J lines ; of the wings 6i lines. 



a. East Indies. From Archdeacon Clerk's collection. 



Pstlopus smaragdinus, n. s. Viridissimus, capite purpureo -cyaneo, 

 abdomine subtus oeneo, antennis nigris, pedibus fulvis, tarsis pos- 

 ticis femoribusque nigris, alis fuscis ad costam fulvo maculatis, 

 marginibus posticis apicibus vittisque nonnullis limpidis. 



Body intense emerald green : head clothed with white hairs 

 beneath, and with white down in front ; crown of the head bright 

 purplish blue : eyes bright red : mouth and feelers black, the latter 



; 



