TABANUS. 37 



c c. Abdomen with three stripes. Species 2-7. 

 b b. Eyes hairy. (Therioplectes, Zeller.) 

 c. Body rather broad. 



d. Abdomen tawny on each side. Species 8-10. 

 dd. Abdomen black, with grey spots. Species 11, 12. 

 c c. Body narrow. Species 13. 



a a. Vein between the cubital areolet and the submarginal areolet 

 forked. Eyes hairy. Species 14, 15. 



1. Bovinus, L. s. n. ii. 1000. 4 (1763); Fb. ; Pz. ! ; Mg.; Mq.; Ztt. 

 Nigro-fuscus, capite flavo-albo, antennis nigris basi fulvis, thorace cinereo 

 quinquevittato, alis subcinereis basi et ad costam fulvis, abdomine maculis 

 trigonis cinereis univittato, segmentorum marginibus posticis fulvis, 

 pedibus fuscis, tibiis flavis. Long. 10-11 ; alar. 20-22 lin. 



Dark brown. Head yellowish- white, clothed in front with pale 

 yellow hairs. Eyes bronzed, not striped. Antennae black, tawny at 

 the base ; notch of the third joint large. Thorax with five grey 

 stripes. Wings pale grey, tawny at the base, and thence along three- 

 fourths of the fore border. Halteres brown, with pale yellow tips. 

 Abdomen with a row of whitish triangular spots ; hind borders of the 

 segments tawny on each side. Legs brown ; tibiaB yellow. 



This, the largest British Tabanus, is not common ; when on 

 the wing it may be distinguished by its loud hum, by its rapid 

 flight, and by the large circles in which it wheels round its prey. 

 (E. S. I.) 



2. autumnalis, L. s. n. ii. 1000. 5 (1763); Mg.; DC.; Mq. ; Ztt. 

 Nigro-fuscus, capite flavo-albo, antennis nigris, thorace cinereo-quinque- 

 vittato, alis cinereis basi et ad costam subfulvis, abdomine maculis canis 

 quinquevittato, pedibus nigris, tibiis flavis apice nigris. Long. 7-^-9 ; 

 alar. 14-18 lin. 



Brownish-black. Head yellowish-white, clothed in front with pale 

 yellow hairs. Eyes bronzed, not striped. Antennas black. Thorax 

 with five grey stripes. "Wings grey, with a slight tawny tinge at tie 

 base and along three-fourths of the fore border. Halteres brown, with 

 yellow knobs. Abdomen rather long, with five rows of hoary spots. 

 TibiaB yellow, with black tips. Male. Abdomen ferruginous on each 

 side. 



Generally distributed. (E. S.) 



3. an thr acinus, Hfg. ; Mg. zw. ii. 36. 7 (1820). Nigro-fuscus, 

 capite flavo-albo, antennis nigris, articulo tertio basi ferruyineo, thorace 

 cinereo-quinquevittato, alis subcinereis, abdomine maculis trigonis 

 canis trivittato, pedibus nigris, tibiis fulvis apice nigris. Long. 7 ; 

 alar. 14 lin. 



Brownish-black. Head yellowish-white, clothed in front with pale 

 yellow hairs. Eyes purplish-green. Antennae black, dark ferruginous 



