164 LIST OF DIPTERA. 



slight angle at the base of the third joint: chest piceous, with a 

 tawny bloom, and having three tawny stripes ; sides and breast 

 hoary, the latter clothed with white hairs: abdomen piceous; hind 

 borders of the segments hoary ; second, third and fourth segments 

 having each a large triangular dull wbite spot on the back, and a 

 smaller oblique hoary spot on each side ; the middle spot also ap- 

 pears on the fifth segment, but is very small ; under-side with a 

 broad hoary stripe on each side : legs gray ; shanks very dark ferru- 

 ginous ; feet and tips of shanks black : wings gray, slightly tinged 

 with brown ; wing-ribs and veins piceous ; poisers piceous, with pale 

 yellow knobs. Length of the body 8 lines ; of the wings 14 lines. 



a. Hong-Kong. Presented by J. C. Bowring, Esq. 



Tabanus macrops, n. s., mas. Ferrugineus, thorace piceo unimacu- 

 lato et quadrivittato, pedibus ferrugineis, tarsis fulvis, alis lim- 

 pidis. 



Head occupied by the eyes above, ferruginous beneath: eyes 

 joined together by a common coppery-green ring along the outer 

 border ; this encloses a broad yellow or golden nearly elliptical ring, 

 which contains a spindle-shaped dark purple band ; these rings are 

 sometimes imperfect: palpi pale yellow; sucker piceous: feelers 

 ferruginous ; third joint piceous or black, except near the base, 

 where it is gray, slightly curved, and has a very slight angle near 

 the base : chest ferruginous, with a large subquadrate piceous spot 

 on the back, and an interrupted piceous stripe on each side : breast 

 paler ferruginous: abdomen ferruginous, with four brown stripes; 

 the inner stripes are parallel along the whole length of the abdomen, 

 and enclose an oblong darker spot on the disk of the second seg- 

 ment; the outer stripes diverge in receding from the tip of the 

 abdomen, and cease at some distance from the base : legs dark fer- 

 ruginous; shanks tawny, with ferruginous tips : wings colourless; 

 veins ferruginous ; brands none ; poisers tawny, with yellow knobs. 

 Length of the body 8 lines ; of the wings 16 lines. 



a. Egypt. Presented by Sir Gardner Wilkinson. 



b. ? Presented by Captain Lord Byron. 



Tabanus internus, n. s., fem. Piceus ferrugineo varius, abdomine 

 ferrugineo fulvo subvittato, apice piceo, pedibus piceis, tibiis 

 tarsisque ferrugineis, alis cinereis basi et margine antico fulvis. 



Head dark piceous, ferruginous about the base of the mouth 

 and of the feelers, with a small ferruginous spot on the back, clothed 

 beneath with yellow hairs : palpi bright pale tawny; lancets ferru- 

 ginous; sucker piceous: feelers ferruginous; third joint piceous to- 

 wards the tip, with an angle above at the base: chest and breast 



