shining black, witli three broad bhiek stripes separated in front by white spots ; 

 post-sutural outer dorso-ccntral bristles three in number ; abdomen black and 

 glabrous, witli sub-interrupted, rather narrow, grey fascia) on the front margins of 

 tho segments, which have both discal and marginal seta) ; legs black and setose ; 

 wings brown, darker along tho front margins. Not common ; I captured it in 

 Kent in June, 1888. 



41.*— PLESINA, Mgn. et Schnr. 

 Stevbnia, Dsv. ct Rnd. 

 Leucostoma, Zett. et Mcq., p. 



Gen. ch. — Species small, with black marked wings, in wliicli the 

 outer cross vein is placed much nearer to the inner one than to the 

 bend of the fourth vein ; eyes nude, approximate in the male, and 

 moderately wide apart in the female ; checks narrow, and, like the 

 facialia, without ciliae ; antenna) small and short ; arista slightly 

 pubescent ; wings with the first posterior cell with a stalk nearly as 

 long as the outer cross vein. 



P. MACULATA, Flu. 



Frontalia with the sides black, and with metallic lustre, central stripe dull 

 black or piceous ; face glistening white, with dark reflections ; antennae very small 

 and rufous ; arista very short ; palpi very small and pale ; thorax shining black, with 

 slightly grey shoulders, and with three post-sutural outer dorso-central bristles ; 

 abdomen black, glabrous, and immaculate, without discal setas ; alula? white ; 

 halteres with a yellow stalk and dark head ; wings with a large black patch on the 

 upper and distal half, and with the cross veins and further half of fourth vein 

 clouded with black; legs black or piceous. Rare; in Mr. Billups' collection. 



43.— PHYTO, Dsv., Rnd..^?. Schnr., i>. 

 Rhinophora, Mgn., j9. 

 Ptyloceba, Mcq.,^. 

 Savia, Rnd., p. 



Gen. ch. — Species rather larger than in Ihc last genus, and more 

 griscesceut ; they also differ by having much shorter wing-stalks (their 

 length not being more, and sometimes less, than a fourth of that of 

 tlie outer cross vein) ; and by the position of the outer cross vein, 

 which is placed rather nearer to the bend of the fourth than to the 

 little cross vein ; the cheeks have a few scattered fine hairs, but no 

 setae ; the eyes are rather widely separated in both sexes ; the antennae 

 have the third joint a little longer than the second ; and the abdomen 

 is either with or without discal setae. 



1 (2) Abdomen marked with grey fasciae .. 1. melanocephala,Mgn. 



2 (1) Abdomen without fasciae 2. niffra, Dsv. 



* I keep to the numbers that I orin-inally gave to tho K^'neia, though I have arranged thciu 

 in a new order. 



