126 Orthorrhapha bracliycera. 



tips; tibiæ yellowish, front tibiæ more or less darkened at the tips; 

 front tarsi blaclc, posterior tarsi brownish ; femora clothed witli long, 

 greyish or yeliow liairs, hind tibiæ with a dense fringe of mostiy 

 biatk ciiiæ on the outer side. AVings with a distinct yellowish tinge 

 towards tlie anterior margin: the veins brown. Halteres brownish, 

 pedimcle paler, apical part of the knob whitish. 



Female. Eyes green, unicoloroiis. Frontal band high and narrow; 

 frontal calhis high, narrowed upwards or more or less triangnlar, 

 dentate beiow as a rule with four teeth, prolonged above in the linear 

 middle cailus. Antennæ as in the male. Second joint of palpi long, 

 somewhat curved, front edge very convex, hind edge nearly straight. 

 the outer side with short yeliow and sorne biack liairs. Tliorax a 

 little paler and more conspicuously striped than in the male. Abdomen 

 flatter and more rounded at the apex, otherwise as in the male. 



Lenght lU — ±2 mm. 



The pupa has a length of 27 mm. 



T. bovinus is common in all Denmark: it is frequently seen on 

 cattle, and it is easily rccognised when flying by the loud noise it 

 produces. It has been taken in all parts of Denmark including Born- 

 holm. I have records of it from ^/s — '/». A pupa, taken at Donse 

 Dam, developed in June. — T. bovinus O. F. Muller, Fn. Fridrichsdal. 

 1784, 86, 767, is with great certainty this species, as he states of it: 

 ,ocuiis virescentibus" ; tilis is thus the first somewhat sure record of 

 the species from Denmark. 



Geographical distribution: — Tiie species is widely distributed and 

 is known from all Europe, Siberia and Africa. 



10. T. sudeticus Zeller. 



1842. Zeller, Isis, 815, 2, Tab. I, Pig. 5-8. - 1S62. Schin. F. A. 1, 

 34. — 1880. Brauer, Denkschr. kais. Akad. Wissensch. Wien, XLII, 184, 

 43, Tab. m et VI, Fig. 43. - 1903. Kat. palaarkt, Dipl. II, 71. 



Male. Eyes dark copper-coloured, unicolorous; eye-facets in the 

 npper two thirds, except a narrow stretch along the liind margin, 

 much larger than in the lower Ihird. the small-faeetted part at the 

 hind margin above mentioned not reaching the ocellar tubercle. Frontal 

 triangle, cheeks and yowls yeliow, with yeliow liairs, apex of the 

 frontal triangle brown. Antennæ reddish, style and apical part of 

 tliird joint dark; apical corner of the basal joint not as much pro- 

 duced as in bovinus. Second joint of palpi long ovate, witii a little 

 downturned point; yeliow and black liaired. Thorax blackish brown 

 with five indistinct stripes; clothed with brown and yeliow golden 

 hairs, pleura and sterna in front with yeliow. farther back with darker 



