114 MR. P. WALKER ON NEW SPECIES OE DIPTERA 



white interrupted bands. Tibiae pale yellowish towards the base, this 

 hue extending to nearly half the length of the hind tibiae. Wings 

 brownish cinereous, dark brown along the costa from the base to be- 

 yond the middle ; veins black ; halteres piceous. Length of the body 

 7 lines; of the wings 14 lines. 



Earn. MIJSCID^, Latr. 



Subfam. Tachinides, Walk. 



G-en. Saralba, n. g. 



Mas. Corpus angustum, subcylindricum. Caput thorace paulo latius 

 Oculi nudi. Proboscis acuta. Palpi graciles, subclavati. Antennae 

 breves, subgraciles ; articulus 3"^ fusiformis, 2° duplo longior. Ab- 

 domen basi subcompressum, thorace fere duplo longius. Pedes ro- 

 busti. Alee angustse. 



Allied to Ocyptera. Male. Body narrow, nearly cylindrical. Head a 

 little broader than the thorax ; frontalia linear ; epistoma slightly 

 prominent. Eyes bare. Proboscis acute. Palpi slender, subclavate. 

 Antennae rather slender, about half the length of the face ; third joint 

 fusiform, twice the length of the second ; arista slender, more than 

 twice the length of the third joint. Abdomen with many short 

 bristles, slightly compressed towards the base, nearly twice the length 

 of the thorax. Legs stout, setose. Wings narrow ; prasbrachial vein 

 forming a curve at its flexure, joining the cubital vein at the tip of 

 the wing ; discal transverse vein slightly undulating, parted by less 

 than half its length from the border, and by much less than its length 

 from the flexure of the prsebrachial vein. 



36. Saralba ocypteroidbs. Mas. Nigra, capite pectoreque argen- 

 teis, frontalibus atris linearibus antice aurato marginatis, palpis 

 testaceis, thorace fasciis duabus cinereis subauratis, abdomine nigri- 

 canti-cinereo spatio basali et segmentorum marginibus pallide cinereis 

 vitta dorsali nigra interrupta, femoribus posterioribus basi flavescen- 

 tibus, alls cinereis dimidio basali nigricante. 



Male. Black. Head silvery white ; frontalia deep black, linear, with 

 gilded borders in front where the eyes diverge from them ; facialia 

 without bristles. Palpi pale testaceous. Thorax with two cinereous 

 slightly gilded bands ; second band abbreviated ; sides slightly bristly. 

 Pectus silvery. Abdomen semihyaline, blackish cinereous; borders 

 of the segments and the whole of the basal part pale cinereous ; a 

 black dorsal line, interrupted on the fore border of each segment. 

 Posterior femora yellowish towards the base, this hue most extended 

 on the hind femora. Wings cinereous, blackish on half the breadth 

 from the costa ; veins and halteres black ; alulae lurid, with blackish 

 borders. Length of the body 4i lines ; of the wings 8 lines. 



Subfam. Dexides, TFaZA;. 



Gren. RuTiLiA, Besv. 



37. RuTiLiA PECTORALis. F(£m. Caerulca, viridi-aurato nitcns, capitc 



