iQii.] O. RiCARDO : Revision of the species of Tabanus. ri 



Palpi pale yellow with black and 

 yellow pubescence. Fore tibiae 

 pale on basal two-thirds only . . fiavicinctus , n. sp. 

 Abdomen dark reddish brown or 

 blackish with two broad yellow 

 bands. Palpi black with grey 

 tomentum and white and black 

 hairs. Fore tibiae pale to apices . . leucocnematns, ^\%ot. 



6. Abdomen black with two white 



bands. Frontal callus almost 

 reaching eyes. Fore tibiae pale on 

 basal two-thirds only. Wings 

 tinged brown on fore border . . hicinctus, n. sp. 

 Abdomen with six white bands. 

 Frontal callus not reaching eyes. 

 Fore tibiae pale to apices. Wings 

 cleaj- _ , . . . sexc inctus , n. sp. 



Group III. 



7. Forehead slightly narrower anterior- 



ly, three and a half to four times 

 as long as it is broad 



8. Abdomen blackish covered with 



golden yellow tomentum and ap- 

 pressed yellow pubescence . . fuhms, Meig. 



Abdomen yellowish with median 

 and lateral blackish or brownish 

 stripes .. •• •• diiaeniafus, Macq. 



Group IV. 



9. Abdomen brown, reddish at base, 



covered with grey tomentum and 

 with two small round greyish spots 

 on the segments. Wings with no 

 appendix. Length 7I to 11 mm. viygo.\V\ed. 



Abdomen blackish brown with me- 

 dian and lateral greyish tomentose 

 spots. Wings with an appendix. 

 Length 13 mm. 



Abdomen covered with greyish yel- 

 low tomentum and with thick 

 short yellow pubescence, 5 : abdo- 

 men the same but a black median 

 stripe often appears, cf . Wings 

 with no appendix. Length iii-12^ 

 mm. .. .. •• negativus, n. sp. 



Group V. 



10. Wings with four dark spots. A])d()men 



reddish brown, with white s])()ts javanus, Fabr. 



nemocallosiis, Ricardo. 



