234 ME. F. WALKER ON DIPTERA COLLECTED IN 



Fam. DOLICHOPID^, Leach. 

 Gren. PsiLOPUS, Meigen. 



22. PsiLOPUS SETicoRNis, Ti. s. Mus ct F(Em. Viridescenti-cyaneus, 

 capite purpiireo, facie argentea, antennis peclibusque nigris, arista lon- 

 gissima, thorace /02m. purpureo, abdomiue aurato-viridi fasciis atris, 

 tibiis flavescentibus, alis cinereis apud costam uigricantibus, halteribus 

 nigris. 



Male. Greenish blue. Head purple ; face silvery white. Proboscis and 

 anteunfE black. Arista of the antenna; much longer than the thorax. 

 Pectus slightly silvery. Abdomen golden green, with deep-black 

 bands, which include the sutures between the segments. Legs black, 

 long, slender ; tibiae yellowish. Wings cinereous, blackish along the 

 costa ; veins and halteres black ; fore branch of the prsebrachial vein 

 slightly curved ; discal transverse vein very undulating. Length of 

 the body 3 lines ; of the wings 6 lines. 



Female. Thorax purjile. Length of the body 2 lines; of the wings 4^ 

 lines. 



23. Psilopus benedictus. Walk. See Vol. IIL p. 91. 



24. Psilopus egens. Walk. See Vol. IIL p. 92. 



Pani. STEPHID.E, ZeacJi. 

 Gen. Eristalis, Latr. 



25. Eristalis splendens, Leguillou. See Vol. IIL p. 95. 



26. Eristalis MERODONTOiDES, n.s. Mas et FcEm. Nigra, facie la- 

 teribus cinereis, thoracis tomento fuscescente lateribus subfulvis, scu- 

 tello sordide flavescente, abdomine fascia interrupta fulva fasciisque 

 dnabus canis, femoribus posticis incrassatis, alis cinereis apud costam 

 subfuscis, alulis flavescenti-cinereis, abdomine elongate subcompresso. 



Male and Female. Black. Face with cinereous tomentum on each side. 

 Thorax with brownish tomentum ; sides shghtly tawny ; scutellum 

 pale dingy yellowish. Abdomen with an interrupted tawny band on 

 the 2nd segment, and with two hoary bands on the fore borders of 

 the 3rd and 4th segments. Hind femora incrassated ; hind tibia; 

 curved. Wings cinereous, diifusedly brown along the costa; veins 

 black, tawny towards the base ; alula; yellowish cinereous. Mate. 

 Abdomen slightly compressed towards the tip, much longer than that 

 of the female ; appendages very large. Length of the body 8-9 lines ; 

 of the wings 16 lines. 



Gen. Syrphus, Fahr. 



27. Syrphus cegrotus, Fabr. See Vol. I. p. 124. 



