118 MR. r. WALKER ON NEW SPECIES OE DIPTERA 



tellum. Abdomen elongate oval, shorter and much narrower than the 

 thorax. Legs stout, bare. Wings rather broad ; subcostal vein end- 

 ing at somewhat before half the length of the costa ; radial vein end- 

 ing at some distance from the tip of the wing ; cubital vein ending at 

 the tip ; prsebrachial vein hardly bent forward ; hinder veins obso- 

 lete ; discal transverse vein straight, parted by nearly twice its length 

 from the border, and by more than twice its length from the prse- 

 brachial transverse vein. 

 This genus is allied to Orygma and to Goelopa, and its structure 



indicates that it also lias burrowing habits and tbat its flight is 



weak. 



44. Tendeba testacea. Mas. Pallide lutea, pubescens, alis limpidis 

 costa exteriore apiceque fuscescentibus. 



'Male. Pale luteous, minutely pubescent. Head a little paler than the 

 thorax. Wings limpid, tinged with brown along the exterior part of 

 the costa and about the tips ; veins black, pale luteous at the base. 

 Length of the body 2\ lines ; of the wings 6 lines. 



Subfam. Ortalides, Saliday. 

 Gen. Lamprogaster, Macq. 



45. Lamprogaster bispinosa. Mas. Testacea, frontalibus et facia- 

 libus nigro-piceis, seutello bispinoso, abdomine purpureo basi testaceo, 

 alis cinereis apud costam fulvescentibus, vena transversa nigricante 

 nebulosa. 



Male. Testaceous, with black pubescence. Head whitish about the 

 eyes ; frontalia and facialia blackish piceous ; face with a deep cavity 

 on each side for the antenna. Antennae less than half the length of the 

 face; third joint fusiform, more than twice the length of the second; 

 arista bare. Thorax with a few black bristles on each side ; scutellum 

 with two stout spines. Abdomen purple, short oval, testaceous to- 

 wards the base, shorter and broader than the thorax. Wings cine- 

 reous, with a tawny tinge along the costa; veins tawny; discal trans- 

 verse vein oblique, slightly bent inward towards the hind end, parted 

 by hardly one-fourth of its length from the border, and by very much 

 more than its length from the prsebrachial transverse vein, which is 

 blackish and clouded. Length of the body 7 lines ; of the wings 14 

 lines. 



46. Lamprogaster OCHROMYOIDES. ilfas. Ochracea, capite argenteo 

 frontalibus nigris, abdominis dimidio apicali piceo, tibiis tarsisque 

 nigris, alis cinereis venis fusco marginatis. 



Male. Dull ochraceous, not pubescent. Head silvery white ; frontalia 

 black, linear. Eyes bare. Proboscis very short. Palpi long, sub- 

 clavate. Antennae nearly as long as the face; third joint linear, 

 rounded at the tip, thrice the length of the second ; arista black, bare. 

 Thorax with a few black bristles on each side. Abdomen oval, a little 



