A Monograph of Egyplian Diptera. 43^ 



iiear the base to thc postalar calli ; thoïc is a large cloiiyate liglit 

 yellow spot on the mesopleunxî, at right angles to tlie sick Unes 

 of the thorax, and a sniall yellow spot on the sternoplcurte in a 

 straight line with thc clongated spot above it; pubeseencc on the 

 thorax is dense blackish-brown, but rather short and inconspie- 

 nous ; it is longer and tawny on the sides and still longer and 

 paler on the pleur;t\ Scutcllum duU yellow with pale hairs on the 

 ilisc, but with a row oi' even and longish yellow hairs ou the 

 margin. 



Abdomen elongate, ainiost as wid;- as the thorax and witii tlitj 

 side margins almost parallel ; it is iluU brownish-blatlv but shilling 

 on the lower margins of the segments and with conspicuous yellow 

 or orange-yellow bands w^hich extend over the side margins. 'J'hc 

 l)asal segment is shining black and possesses two yellow, roundish, 

 latéral spots, which extend only a little way on the dorsum ; thc 

 second segment possesses a broad orange-yellow ti-ansverse band, 

 which is nearly as wide as half the length of the segment and 

 situated in the middlc of the segment ; thTs band is inore or less 

 deeply constricted in the centre and sometimes interrupted ; the 

 orange-yellow band on the third segment is quite continuons, as 

 wide as half the length of the segment, and is situated on the 

 upper half (i.e. its upper margin near the basai margin of thc 

 segment) ; the fourth segment bas a yellow hind margin and an 

 uninterrupted yellow band whîch occupies exactly the upper half 

 (i.e. from the upper margin to the middle of the segment); in 

 thèse two last segments, the dark background is often much faded, 

 and gives the effect of the colonrs running together, and hencc 

 the contrast is much less conspicuous than in the second segment ; 

 the fifth and sixth segments are reddish-brown and sometimes the 

 upper margin of the fifth segment is dark brown with a yellowish 

 hind margin ; pubescence on the abdomen very short, inconspicuous 

 and mainly following the ground colour except on the first segment 

 and the upper half of the second segment, where it is longer and 

 very pale. 



Venter pale yellow and very transparent on thc three basai 

 segments where the dark background of the dorsum shows through; 

 on the four apical segments it is brown or dark brown with darkcr 

 places ; on the second and third segments there are two médian, 

 oval, brown or blackish spots, wdiich are situated on the lower 

 half of the segment, and the spot on thc second segment is lai'gei' 

 than tlie one on the third. Hypopygium dark reddish-biown and 

 rather shining ; pubescence on venter very scarce, short, pale and 

 inconspicuous. 



Legs entirely yellow except the front coxa\ thc tlure middlc 

 joints of tlie front tarsi and thc three ;i.pical joints of thc 



