220 ME. F. WALKEK ON DIPTERA COLLECTED IK 



vertex. Antennae testaceous, short ; arista minutely plumulose. Ab- 

 domen and legs black ; tarsi white. Wings white, with four blackish 

 bands; 1st band abbreviated hindward ; 2nd forked near the costa ; 

 4th apical, obliquely divided in the middle ; veins black ; discal trans- 

 verse vein straight, parted by less than its length from the border, 

 and by much more than its length from the praebrachial transverse 

 vein ; halteres white. Length of the body 3 lines ; of the wings 6 

 lines. 



Gen. Strumeta, Walk. 



84. Strumeta HELOMYZoiDES, n. s. 3fas ef Fcem. Testacea, thorace 

 pectoreque nigro quadrivittatis, abdomine ovato {mas) aut lanceolato 

 (fcem.) apicem versus nigricaute, alis nigricautibus postice cinereis. 



Male and Female. Testaceous, with long black bristles. Antennae 

 much less than half the length of the face ; arista plumose. Thorax 

 with four black stripes ; inner stripes extending along the sides of the 

 scutellum ; outer stripes extending to the fore wings. Pectus with 

 two black stripes on each side. Abdomen blackish towards the tip, 

 oval in the male, lanceolate in the female. Wings blackish, hind part 

 cinereous for more than half the breadth, and for two-thirds of the 

 length from the base ; veins black ; discal transverse vein nearly 

 straight, parted by half its length from the border, and by much more 

 than its length from the praebrachial transverse vein. Length of the 

 body 5-6 lines; of the wings 10-11 lines. 



Gen. Lamprogaster, Macq. 



85. Lamprogaster marginifera, Walk. See Vol. ILL p. 111. 



86. Lamprogaster scutellaris, f^Fa^A:. See Vol. IlL p. 112. 



87. Lamprogaster SEPSOIDES, n. s. Fcem. Cyaneo-purpurea, capite 

 antico rufescente, oculis albo cinctis, antenuis rufescentibus, thorace 

 vittis duabus anticis cinereis, scutello abdomineque purpureis, pedibus 

 piceis, tarsis argenteis apice nigris, alis subcinereis nigro quadristri- 

 gatis, striga 1* basali, 2" 3^ que transversis, 4* costali subapicali. 



Female. Bluish purple, with black bristles. Head reddish, blacky above, 

 white about the eyes. Antennae reddish ; arista bare. Thorax with 

 an indistinct cinereous stripe on each side in front ; scutellum and ab- 

 domen purple, the latter dull ferruginous beneath. Legs piceous; 

 tarsi silvery, black towards the tips. Wiugs slightly cinereous, with 

 an irregular black basal streak, with a black streak along the apical 

 part of the costa, and with two intermediate transverse black streaks, 

 of which the first is abbreviated hindward, and the second is inter- 

 rupted between the cubital vein and the praebrachial vein and extends 

 along the discal transverse vein ; veins tawny, black towards the tips; 

 halterc's tawny, with black knobs. Length of the body 5 lines; of 

 the wings 10 lines. 



