182 LIST OF DIPTERA. 



114. Tabanus TRIJUNCTUS. 



J£pem. Ferrugineus ; antenna rufescentes, dilatatce non furcates 

 apice fuscescentes ; thorax cano quinquevittatus ; scutellum 

 nigrum, ferrugineo marginatum ; abdomen nigrum, segmento- 

 rum marginibus posticis maculisque dorsalibus trigonis albis, 

 basi ferrugineum nigro vittatum ; pedes rufescentes, femoribus 

 anticis nigris ; alee cinerece, antice ferrugineo, areolis nonnul- 

 lis hyalino strigatis, venis transversis nigro marginatis. 



Very nearly allied to T. variegatus, but distinct. Fern, Ferru- 

 ginous. Head with whitish testaceous tomentum and down. Palpi 

 and antennas reddish ; first and second joints of the antennae 

 dilated above and forming horns ; third dilated and forming a 

 slightly acute angle ; tips brownish. Thorax with five hoary stripes. 

 Pectus hoary. Scutellum black ; hind border ferruginous. Abdo- 

 men black, ferruginous towards the base, excepting a dorsal stripe ; 

 on the hind border of each segment a white band, which is dilated 

 in the middle above into a triangle. Legs reddish ; tips of the tarsi 

 brown ; fore femora black. Wings dark gray, ferruginous in front; 

 disks of some of the areolets with almost limpid streaks ; transverse 

 veins clouded with black ; first branch of the cubital vein simple, 

 clouded at the base ; second branch converging towards the externo- 

 medial vein ; subanal vein joining the anal at some distance from 

 the border. Length of the body 7 lines ; of the wings 15 lines. 



a, b. Florida. Presented by E. Doubleday, Esq. 



115. Tabanus melanocerus. 



Fuscus ; thorax vittis quinque ; abdomen vitta e maculis trigonis et 

 tibiae basi albce. 



Tabanus melanocerus, Wied. 

 Kentucky. British North America. 



116. Tabanus guttatus. 





Lilacino-rubidus, albido vittatus ; abdomen fuscum, trifariam 

 albo maculatum ; tibia alba. 



Tabanus guttatus, Megerle. Wied. Dipt. Exot. i. 73, 20 ; Auss. 

 Zweifl. i. 133, 34. 



America. 



