THE DIPTERA 



(g) Thorax with white frontal median spot, two large lateral 



spots, one small spot on front of wings, one narrow 

 median white line and narrow submedian lines on 

 posterior half. Last two hind tarsi white — wellmani 

 Theobald. 



(h) Thorax brown, with broad white line in front, extending 



laterally towards the wings, where they swell into a 

 large patch, a white line just behind wings. Last two 

 hind tarsi white- — alhipes Theobald. 



(i) Thorax with silvery white spot on each side in front, small 



spot over root of wings, and a white spot over the base 



of the wings — pseudonigeria Theobald, 

 (j) Thorax with two lateral white spots, the front one the 



largest; a small median one near the head; two yellow 



median lines and a short silvery one on each side before 



the scutellum — simpsoni Theobald. 

 (k) Thorax with a silvery white scaled area in front, and 



another on each side in front of wings- — avgenteomaculata 



Theobald. 



(l) Thorax with a median, yellowish-white line, a silvery patch 

 on each side in front of the wings, extending as a fine 

 yellow line to scutellum, and another silvery spot before 

 base of each wing — poweri Theobald. 



(m) Thorax with small grey-scaled area in front of roots of 

 wings, and three short creamy lines behind — minu- 

 tissima Theobald. 



(n) Abdomen black, fifth segment with yellow basal band, 

 sixth unhanded, (seventh) two medio-lateral white spots, 

 (eighth) two baso-lateral white spots; second hind tarsi 

 nearly white — dubia Theobald. 

 (6) Abdomen unhanded, 



(1) Third hind tarsal nearly all white. 



Thorax with two lateral white marks directed upwards — 

 africana Theobald. 



(2) First hind tarsal all white. 



Thorax with one white spot anteriorly, and one in front 



of each wing^ — -apicoargentea Theobald. 

 Thorax chestnut brown — terrens Walker. 

 II. Legs with white lines as well as basal bands. 



Thorax brown, with white lines ; abdomen with basal bands — granti 

 Theobald. 



III, Fore and mid legs with apical bands; hind basal. 



Fourth tarsal of hind-legs nearly all white — mediopunctata 

 Theobald, 



Base of mid-metatarsi, base and apex of hind, and base of first 

 tarsal with pale banding — assamensis Theobald, 



IV. Legs unhanded: — 



(a) Abdomen basally banded. 



(1) Thorax with front half silvery white, remainder bronzy- 



brown — pseudonivea Theobald, 



(2) Thorax deep brown with scattered golden scales — alho- 



cephala Theobald. 



(3) Thorax brown with golden stripes — auriostriata Banks, 

 (&) Abdomen banding indistinct. 



Thorax with broad silvery white patch on each side anteriorly — 

 alholateralis Theobald, 

 (c) Abdomen unhanded. 



Thorax with six silvery spots — argenteopunctata Theobald, 

 {d) Abdomen with apical white lateral spots. 



Thorax unadorned, except for pale scaled lines laterally — 

 punctolateyalis Theobald. 



