72 SYBPHID^. 



16. Facial bump pale yellow ; scutelluni yellow- 



haired ; hiud femora partly ( d )> or 



entirely ( 2 ), orange, hind tibiae mainly [p. 87. 



oranpe lafifasciattis, Macq.. 



Facial bump dark ; scutellum black-haired ; [p. 89. 



hind femora and tibiae nearly all black. . fiilvifacies, Bruu., 



17. Hind leg-s with conspicuous black pubes- 



cence : long. 14-15 mm aqualis, Walk., p. 90. 



Hind legs without such conspicuous black [p. 91. 



pubescence : long. 6 mm maculipleura, Brun., 



18. Abdominal bands lying acro.«s middle of [p. 92. 



segments, nearer front than hind margins. confrater^ Wied., 

 Abdominal bands placed on hind margins 

 of segments, each band slight^ over- 

 lapping the following segment* asswu'lis, Macq., p. 94. 



56. Syrphus albostriatits, Mn. (PI. II, figs. 5-8.) 



tScceva albostriata, Fallen, Dipt. Suec, Syrph. p. 42 (1817). 

 Syrphus albostriattis, Verrall, British Flies, Syrph, p. 344, figs. 282- 

 '284. 

 Syrphus carinthiacus, Latzel, Jahrb. d. naturh. Landesmus. von 

 Karuten, p. 105 (1876). 



S $ . Head : S -, eyes absolutely contiguous for only a short 

 distance, but very narrowly separated thence to vertex, bearing 

 dense brown pubescence ; frons with dark grey dust and black 

 hairs, mainly occupied by the relatively large shining black 

 antennal prominence ; face bright chrome-yellow, a little darker 

 below anteunse, with a distinct black median stripe enclosing the 

 shining central bump ; cheeks orange, generally sharply demar- 

 cated from face by a clear-cut black stripe ; pubescence of face 

 fine, black, that of cheeks whitish. Antennae and proboscis black. 

 Occiput grey, with a yellowish-wliite uninterrupted fringe, which 

 is more whitish on lower part and more yellowish on upper part, 

 where there are some long black liairs on vertex. In 5 , frons 

 from vertex to base of antennae shining black with a broad trans- 

 verse grey space across the middle, the colour continued narrowly 

 along eye-margins till merged in the yellow face. In both sexes 

 both frons and face sometimes almost translucent. Thorax 

 moderately shining aeneous-black ; a pair of obvious though not 

 conspicuous short grey stripes, narrowly separated, extending 

 from anterior margin hindwartis to beyond suture ; a slight 

 greyish tinge at each end of suture; pleurte dnrk grey, shining ; 

 pubescence of dorsum and pleurae yellowish or yellowish-grey, 

 scutellum brownish-yellow, with v\ holly long black pubescence 

 except for some shorter yellow hairs in front. Abdomen black ; 



* I add this species to the table, as Macqnart's expression "near ribesii" 

 should mean that the eyes are bare; however, he uses the same expression with 

 regard to his consimifis, in whicli he states tlie eyes to be pubescent. 



