212 ME. F. WALKEK ON DTPTERA COLLECTED IN 



men thorace pauUo angustius. Pedes sat graciles. Alee acutse, vena 

 cubitali valtle flexa, vena anali subundulata. 

 Male. Body subfusiform. Head prominent, short conical, very little 

 narrower than the thorax ; front and epistoma convex. Eyes very 

 large. Ocelli nearly contiguous, seated on a slight protuberance of 

 the hind border. Antennae very short ; 3rd joint round ; arista bare. 

 Abdomen a little longer than the thorax. Legs rather slender. Wings 

 acute ; cubital vein very deeply bent ; veinlet at the base of the sub- 

 apical areolet curved outward ; anal vein slightly undulating. 



60. AxoNA VOLUCELLOIDES, n. sp. Mas. Purpurascenti-cyanea, 

 facie vittis duabus argenteis, antennis nigris, thorace disco antico 

 nigro vittis duabus argenteis, abdomine apicem versus fulvo, tibiis 

 basi tarsisque piceis, alls cinereis, vitta lata costali fusca, halteribus 

 pallide testaceis. 



Male. Purplish blue. Face with two lateral silvery stripes which are 

 dilated towards the epistoma. Antennae black. Thorax with the 

 middle foi'e part black, silvery along the fore border, and with two 

 silvery stripes. Abdomen tawny towards the tip and on each side of 

 the 3rd segment ; underside tawny along each side. Tibiae towards 

 the base, and tarsi, piceous. Wings cinereous, with a broad brown 

 costal stripe, which does not extend to the tips, and is interlined 

 hindward; veins black; halteres pale testaceous. Length of the 

 body 10 lines ; of the wings 20 lines. 



Gen. Syephus, Fair. 



51. Syrphus aegrotus, Fabr. See Vol. I. p. 124. 

 62. Syrphus ericetorum, Fabr. See Vol. III. p. 97. 



G-eu. Baccha, Fair. 



53. Baccha tripartita. Walk. See Vol. V. p. 285. 



54. Baccha purpuricola. Walk. See Vol. III. p. 129. 



Masl Fulva, capite antico pallide fiavo-subchalybeo, antennis testaceis, 

 thoracis disco obscuro, pectore strigis duabus transversis pallide flavis, 

 abdomine fasciis tribus fuscescentibus apicem versus purpurasceute, 

 femoribus posticis fuscescente fasciatis, alis obscure fuscis basi 

 cinereis. 



Malel Tawny. Head in front pale yellow v>'ith a slight chalybeous 

 tinge. Antennae testaceous. Thorax with a black disk ; pectus with 

 a transverse pale yellow streak on each side in front. Abdomen 

 with three brownish bands on the fore part, which is petiolated; 

 apical part broad, purplish. Femora yellowish, hind femora with a 

 brownish band. Wings dark brown, cinereous at the base. Length 

 of the body 6 lines ; of the wings 14 lines. 



