180 LIST OF DIPTERA. 



tawny; sucker black: feelers ferruginous, with black tips; third 

 joint with an angle near the base : abdomen yellowish white, espe- 

 cially on the under-side ; hind borders of the segments pale tawny : 

 legs tawny : hips, thighs and tips of feet piceous : wings colourless ; 

 veins tawny, piceous along the fore borders ; poisers very pale yellow. 

 Length of the body 6 — 6^ lines ; of the wings 11 — 12 lines. 



a. Swan River. Presented by Sir J. Eichardson. 



Tabantjs caesius, n. s., fern. Glaucus, subtus albidus, capite albo, 

 abdominis segmentorum marginibus posticis fulvescentibus, pe- 

 dibus fulvis y alis albis. 



Body hoary with a bluish tint, almost white beneath: head 

 white : eyes brassy : mouth black ; palpi yellowish white : feelers 

 tawny : hind borders of the abdominal segments pale tawny : legs 

 tawny ; hips and thighs with a white bloom : wings white ; wing- 

 ribs and veins tawny ; poisers yellow. Length of the body 6 lines ; 

 of the wings 12 lines. 



a. ? From Mr. Children's collection. 



Tabanus dorsiger, Wied. Dipt. Exot. i. 83, 38. Auss. Zweif. \ 



172,92. 

 a. Monte Video. Presented by C. Darwin, Esq. 



Tabanus rufiventris, Macq. Dipt. Exot. i. 141, 39. 

 a. Jamaica. From Mr. Gosse's collection. 



Tabanus secundus, n. s., mas. Piceus, thoracis lateribus ferrugineis , 

 pectore cano, abdomine fulvo vittis tribus pallidioribus, apice 

 piceo, antennis pedibusque ferrugineis, propedibus nigris, alis 

 subcinereis. 



Head hoary and clothed with white hairs beneath : eyes bronze 

 colour: feelers ferruginous, piceous at the base, no horn on the third 

 joint: mouth black: palpi tawny: chest piceous, with a slight gray 

 bloom ; sides ferruginous : breast hoary : abdomen tawny, paler to- 

 wards the base, piceous at the tip, having three stripes which are 

 whitish at the base, pale tawny towards the tip ; the middle stripe 

 is more distinct than those on the sides ; a piceous stripe on the 

 under-side extends from the base to the hind border of the second 

 segment : legs ferruginous ; feet piceous ; fore legs black, their 

 shanks ferruginous towards the base : wings slightly gray, tinged 

 with brown on the fore borders ; wing-ribs and veins ferruginous, 

 the latter piceous towards the tips ; poisers tawny. Length of the 

 body 5 lines ; of the wings 8 lines. 



