EMPIS. 95 



19. nigritarsis, Mg. zw. iii. 32. 31 (1822); Mq. ; Ct. Nigra, 



alls Ihnpidk, halteribus flavo-albis, abdominis basi idrinqut albo-piloso, 

 pedibiis fulvis albo-hirtis, coxis posterio7'ibus (/enubns posticis tarsis et 

 tibiis apice nigris. Long. 2 ; alar. 4 lin. 



Black, shining. Head and thorax thinly clothed with hairs, grey be- 

 neath. Lancets ferruginous. Fii'st and second joints of the antennae 

 clothed with a few short hairs ; third lanceolate, much more than twice 

 the leng-th of the first and of the second ; fifth about one-fourth of the 

 length of the third. Wrings colourless ; stigma brown ; veins black, 

 tawny towards the base. Halteres yellowish-white. Abdomen clothed 

 with long ichitish hairs on each side towards the base. Legs taicny, 

 thinly clothed with long whitish hairs, wliich are most prevalent on the 

 tibicE ; posterior coxa, hind knees, tarsi, and tips of the tibiee black ; 

 hind tarsi towards the base and tips of the hind tibiae dilated, especially 

 in the male. 



Not. rare. (E.) 



20. stercorea, L. fn. 1899 (1761) ; Shr. ; Fb. ; LI. ; Fhi. ; Mg. ; 

 Ct. Lutea, capite cinereo, antennis uigris, thorace tiigro-univittato, 

 alls Umpidis, halteribus flavis, abdomine nigro-trivittato, pedibus flavis, 

 tarsis ferrugineis. Long. 3-^ ; alar. 9 lin. 



Luteous, shining, clothed with a few black hairs and bristles. Head 

 cinereous. Proboscis luteous, black towards the tip. Antennae black ; 

 first and second joints clothed with black hairs ; first long, linear ; 

 second very short ; third tapering much longer than the fu'st ; fifth 

 about half the length of the tliii'd. Thorax with a black linear stripe. 

 Wings colourless ; stigma pale brown, veiy narrow ; veins black, tawny 

 at the base. Halteres yellow. Abdomen with 3 black stripes. Legs 

 yellow, long, slender ; tarsi ferniginous. 



Generally distributed. (E. S. I.) 



21. ignota, Mg. zw. vi. 338 (1830) ; Mq. ; Ztt. ; Ci.— punctata. 

 Fin. ; ^Ig. — dorsalis ? Ct. Lutea, capite supra cinereo, antennis nigris, 

 thorace cinereo fusco-trivittato, alis subcinereis, halteribus flavis, abdo- 

 mine nigro-trivittato, pedibus luteis, tarsis nigris. Long. 2f ; alar. 

 7 lin. 



Luteous, clothed with a few black hairs and bristles. Head grey 

 above. Lancets luteous, with black tips. Palpi yellow. xVntennpe 

 black ; first and second joints clothed with short black hairs. Disc of 

 the thorax grey, with 3 brown stripes. IVings pale grey ; stigma very 

 pale brown, very narrow ; veins black, taAvny towards the base. Hal- 

 teres yellow. Abdomen with 3 black stripes ; the middle one much 

 broader than the outer pair. Legs luteous, clothed with very short 

 black hairs ; tarsi black. 



Generally distributed. (E. S. I.) 



23. trigramma, Hms. ; Mg. zw. iii. 38. 43 (1832) ; Ztt. — punctata 

 \ ar. y, Pin. Lutea, antennis nigris, thorace cinereo-tiivittaio fusco- 



